Fixed compiler warning and warning from valgrind

The failing test was main.gis-json

sql/item_geofunc.cc

@@ -144,7 +144,7 @@ String *Item_func_geometry_from_json::val_str(String *str)
     {
       String *sv= args[1]->val_str(&tmp_js);
       my_error(ER_WRONG_VALUE_FOR_TYPE, MYF(0),
-               "option", sv->c_ptr(), "ST_GeometryFromJSON");
+               "option", sv->c_ptr_safe(), "ST_GeometryFromJSON");
       null_value= 1;
       return 0;
     }

storage/connect/tabtbl.cpp

@@ -650,7 +650,7 @@ bool TDBTBM::IsLocal(PTABLE tbp)
 
 	return ((!stricmp(tdbp->Host, "localhost") ||
 		       !strcmp(tdbp->Host, "127.0.0.1")) &&
-		        tdbp->Port == (int)GetDefaultPort());
+                       (int) tdbp->Port == (int)GetDefaultPort());
 }	// end of IsLocal
 
 /***********************************************************************/