Fix style issues

Signed-off-by: Ben Taylor <ben.taylor@linaro.org>
diff --git a/library/x509.c b/library/x509.c
index 14f9ba5..b8f2847 100644
--- a/library/x509.c
+++ b/library/x509.c
@@ -721,7 +721,7 @@
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
 
-    if ((ret = mbedtls_x509_oid_get_sig_alg(sig_oid, md_alg, (mbedtls_pk_type_t*)pk_alg)) != 0) {
+    if ((ret = mbedtls_x509_oid_get_sig_alg(sig_oid, md_alg, (mbedtls_pk_type_t *) pk_alg)) != 0) {
         return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_UNKNOWN_SIG_ALG, ret);
     }
 
diff --git a/library/x509_crt.c b/library/x509_crt.c
index dca4679..dde6513 100644
--- a/library/x509_crt.c
+++ b/library/x509_crt.c
@@ -1663,25 +1663,25 @@
 
 #if !defined(MBEDTLS_X509_REMOVE_INFO)
 #define PRINT_ITEM(i)                               \
-        do {                                            \
-            ret = mbedtls_snprintf(p, n, "%s" i, sep);  \
-            MBEDTLS_X509_SAFE_SNPRINTF;                 \
-            sep = ", ";                                 \
-        } while (0)
+    do {                                            \
+        ret = mbedtls_snprintf(p, n, "%s" i, sep);  \
+        MBEDTLS_X509_SAFE_SNPRINTF;                 \
+        sep = ", ";                                 \
+    } while (0)
 
 #define CERT_TYPE(type, name)          \
-        do {                               \
-            if (ns_cert_type & (type)) {   \
-                PRINT_ITEM(name);          \
-            }                              \
-        } while (0)
+    do {                               \
+        if (ns_cert_type & (type)) {   \
+            PRINT_ITEM(name);          \
+        }                              \
+    } while (0)
 
 #define KEY_USAGE(code, name)      \
-        do {                           \
-            if (key_usage & (code)) {  \
-                PRINT_ITEM(name);      \
-            }                          \
-        } while (0)
+    do {                           \
+        if (key_usage & (code)) {  \
+            PRINT_ITEM(name);      \
+        }                          \
+    } while (0)
 
 static int x509_info_ext_key_usage(char **buf, size_t *size,
                                    const mbedtls_x509_sequence *extended_key_usage)
@@ -3057,7 +3057,7 @@
     /* Check the type and size of the key */
     pk_type = mbedtls_pk_get_type(&crt->pk);
 
-    if (x509_profile_check_pk_alg(profile, (mbedtls_pk_sigalg_t)pk_type) != 0) {
+    if (x509_profile_check_pk_alg(profile, (mbedtls_pk_sigalg_t) pk_type) != 0) {
         ee_flags |= MBEDTLS_X509_BADCERT_BAD_PK;
     }
 
diff --git a/library/x509write_crt.c b/library/x509write_crt.c
index 93cdd2c..e1d5758 100644
--- a/library/x509write_crt.c
+++ b/library/x509write_crt.c
@@ -587,7 +587,8 @@
     c2 = buf + size;
     MBEDTLS_ASN1_CHK_ADD(sig_and_oid_len, mbedtls_x509_write_sig(&c2, c,
                                                                  sig_oid, sig_oid_len,
-                                                                 sig, sig_len, (mbedtls_pk_sigalg_t)pk_alg));
+                                                                 sig, sig_len,
+                                                                 (mbedtls_pk_sigalg_t) pk_alg));
 
     /*
      * Memory layout after this step:
diff --git a/library/x509write_csr.c b/library/x509write_csr.c
index 9040d63..5b2a17b 100644
--- a/library/x509write_csr.c
+++ b/library/x509write_csr.c
@@ -249,7 +249,7 @@
     c2 = buf + size;
     MBEDTLS_ASN1_CHK_ADD(sig_and_oid_len,
                          mbedtls_x509_write_sig(&c2, buf + len, sig_oid, sig_oid_len,
-                                                sig, sig_len, (mbedtls_pk_sigalg_t)pk_alg));
+                                                sig, sig_len, (mbedtls_pk_sigalg_t) pk_alg));
 
     /*
      * Compact the space between the CSR data and signature by moving the