- Added x509_get_sig_alg() to allow easy future X509 signature algorithm determination expansion

diff --git a/include/polarssl/x509.h b/include/polarssl/x509.h
index 06b979f..9e1d5d6 100644
--- a/include/polarssl/x509.h
+++ b/include/polarssl/x509.h
@@ -180,6 +180,7 @@
 
     x509_buf sig_oid2;
     x509_buf sig;
+    int sig_alg;
 
     struct _x509_cert *next; 
 }
@@ -220,6 +221,7 @@
 
     x509_buf sig_oid2;
     x509_buf sig;
+    int sig_alg;
 
     struct _x509_crl *next; 
 }