mysql51: fix crash bug

MySQL 5.1 doesn't have utf8mb4. We need to check its availability. [groonga-dev,01069] Reported by wakisuke. Thanks!!!
mroonga · Oct 29, 2012 · fe65816 · fe65816
1 parent 002af71
commit fe65816
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/ha_mroonga.cpp b/ha_mroonga.cpp
@@ -289,7 +289,7 @@ static int mrn_change_encoding(grn_ctx *ctx, const CHARSET_INFO *charset)
     GRN_CTX_SET_ENCODING(ctx, GRN_ENC_UTF8);
     DBUG_RETURN(0);
   }
-  if (charset->cset == mrn_charset_utf8mb4->cset)
+  if (mrn_charset_utf8mb4 && charset->cset == mrn_charset_utf8mb4->cset)
   {
     GRN_CTX_SET_ENCODING(ctx, GRN_ENC_UTF8);
     DBUG_RETURN(0);