Try to handle a malloc failure. I'm not entirely sure this is correct.

There might be something else we need to do to handle the exception.

Klocwork # 212-213

Modules/_sre.c

@@ -1166,6 +1166,9 @@ entrance:
 
             /* install new repeat context */
             ctx->u.rep = (SRE_REPEAT*) PyObject_MALLOC(sizeof(*ctx->u.rep));
+            /* XXX(nnorwitz): anything else we need to do on error? */
+            if (!ctx->u.rep)
+                RETURN_FAILURE;
             ctx->u.rep->count = -1;
             ctx->u.rep->pattern = ctx->pattern;
             ctx->u.rep->prev = state->repeat;