Minor style and typo corrections
diff --git a/library/x509write_crt.c b/library/x509write_crt.c
index a6b095a..19dd0be 100644
--- a/library/x509write_crt.c
+++ b/library/x509write_crt.c
@@ -52,7 +52,7 @@
 
 void x509write_crt_init( x509write_cert *ctx )
 {
-    memset( ctx, 0, sizeof(x509write_cert) );
+    memset( ctx, 0, sizeof( x509write_cert ) );
 
     mpi_init( &ctx->serial );
     ctx->version = X509_CRT_VERSION_3;
@@ -66,7 +66,7 @@
     asn1_free_named_data_list( &ctx->issuer );
     asn1_free_named_data_list( &ctx->extensions );
 
-    polarssl_zeroize( ctx, sizeof(x509write_cert) );
+    polarssl_zeroize( ctx, sizeof( x509write_cert ) );
 }
 
 void x509write_crt_set_version( x509write_cert *ctx, int version )
@@ -141,10 +141,10 @@
 {
     int ret;
     unsigned char buf[9];
-    unsigned char *c = buf + sizeof(buf);
+    unsigned char *c = buf + sizeof( buf );
     size_t len = 0;
 
-    memset( buf, 0, sizeof(buf) );
+    memset( buf, 0, sizeof( buf ) );
 
     if( is_ca && max_pathlen > 127 )
         return( POLARSSL_ERR_X509_BAD_INPUT_DATA );
@@ -164,7 +164,7 @@
 
     return x509write_crt_set_extension( ctx, OID_BASIC_CONSTRAINTS,
                                         OID_SIZE( OID_BASIC_CONSTRAINTS ),
-                                        0, buf + sizeof(buf) - len, len );
+                                        0, buf + sizeof( buf ) - len, len );
 }
 
 #if defined(POLARSSL_SHA1_C)
@@ -172,14 +172,14 @@
 {
     int ret;
     unsigned char buf[POLARSSL_MPI_MAX_SIZE * 2 + 20]; /* tag, length + 2xMPI */
-    unsigned char *c = buf + sizeof(buf);
+    unsigned char *c = buf + sizeof( buf );
     size_t len = 0;
 
-    memset( buf, 0, sizeof(buf) );
+    memset( buf, 0, sizeof( buf ) );
     ASN1_CHK_ADD( len, pk_write_pubkey( &c, buf, ctx->subject_key ) );
 
-    sha1( buf + sizeof(buf) - len, len, buf + sizeof(buf) - 20 );
-    c = buf + sizeof(buf) - 20;
+    sha1( buf + sizeof( buf ) - len, len, buf + sizeof( buf ) - 20 );
+    c = buf + sizeof( buf ) - 20;
     len = 20;
 
     ASN1_CHK_ADD( len, asn1_write_len( &c, buf, len ) );
@@ -187,21 +187,21 @@
 
     return x509write_crt_set_extension( ctx, OID_SUBJECT_KEY_IDENTIFIER,
                                         OID_SIZE( OID_SUBJECT_KEY_IDENTIFIER ),
-                                        0, buf + sizeof(buf) - len, len );
+                                        0, buf + sizeof( buf ) - len, len );
 }
 
 int x509write_crt_set_authority_key_identifier( x509write_cert *ctx )
 {
     int ret;
     unsigned char buf[POLARSSL_MPI_MAX_SIZE * 2 + 20]; /* tag, length + 2xMPI */
-    unsigned char *c = buf + sizeof(buf);
+    unsigned char *c = buf + sizeof( buf );
     size_t len = 0;
 
-    memset( buf, 0, sizeof(buf) );
+    memset( buf, 0, sizeof( buf ) );
     ASN1_CHK_ADD( len, pk_write_pubkey( &c, buf, ctx->issuer_key ) );
 
-    sha1( buf + sizeof(buf) - len, len, buf + sizeof(buf) - 20 );
-    c = buf + sizeof(buf) - 20;
+    sha1( buf + sizeof( buf ) - len, len, buf + sizeof( buf ) - 20 );
+    c = buf + sizeof( buf ) - 20;
     len = 20;
 
     ASN1_CHK_ADD( len, asn1_write_len( &c, buf, len ) );
@@ -213,7 +213,7 @@
 
     return x509write_crt_set_extension( ctx, OID_AUTHORITY_KEY_IDENTIFIER,
                                    OID_SIZE( OID_AUTHORITY_KEY_IDENTIFIER ),
-                                   0, buf + sizeof(buf) - len, len );
+                                   0, buf + sizeof( buf ) - len, len );
 }
 #endif /* POLARSSL_SHA1_C */