Fix tabulation

Signed-off-by: Fabio Utzig <utzig@apache.org>
Signed-off-by: David Brown <david.brown@linaro.org>
diff --git a/boot/bootutil/src/image_validate.c b/boot/bootutil/src/image_validate.c
index 06d077c..3f0550b 100644
--- a/boot/bootutil/src/image_validate.c
+++ b/boot/bootutil/src/image_validate.c
@@ -172,10 +172,10 @@
 
     rc = flash_area_read(fap, off, &info, sizeof(info));
     if (rc) {
-            return rc;
+        return rc;
     }
     if (info.it_magic != IMAGE_TLV_INFO_MAGIC) {
-            return -1;
+        return -1;
     }
     end = off + info.it_tlv_tot;
     off += sizeof(info);
@@ -200,10 +200,10 @@
             }
             rc = flash_area_read(fap, off + sizeof(tlv), buf, sizeof hash);
             if (rc) {
-                    return rc;
+                return rc;
             }
             if (memcmp(hash, buf, sizeof(hash))) {
-                    return -1;
+                return -1;
             }
 
             sha256_valid = 1;