Fix or improve some comments (and whitespace)
diff --git a/library/pk.c b/library/pk.c
index ba8950e..ce8dbb5 100644
--- a/library/pk.c
+++ b/library/pk.c
@@ -204,7 +204,7 @@
  * Helper to set up a restart context if needed
  */
 static int pk_restart_setup( mbedtls_pk_restart_ctx *ctx,
-                               const mbedtls_pk_info_t *info )
+                             const mbedtls_pk_info_t *info )
 {
     /* Don't do anything if already set up or invalid */
     if( ctx == NULL || ctx->pk_info != NULL )