eolian/eo1_generator: Fix leak in error path

We allocated tmpstr so we should free it before we return in the error case.

CID 1191926

src/bin/eolian/eo1_generator.c

@@ -253,6 +253,7 @@ eo1_header_generate(const char *classname, Eina_Strbuf *buf)
    if (!eolian_class_exists(classname))
      {
         ERR ("Class \"%s\" not found in database", classname);
+        free(tmpstr);
         return EINA_FALSE;
      }