silence bogus [-Wmaybe-uninitialized] with -O0/-O1/-Os

src/util.c

@@ -522,7 +522,15 @@ map_name( const char *arg, char **result, int reserve, const char *in, const cha
 		for (ll = 0; ll < inl; ll++)
 			if (arg[i + ll] != in[ll])
 				goto rnexti;
+#ifdef __GNUC__
+# pragma GCC diagnostic push
+/* https://gcc.gnu.org/bugzilla/show_bug.cgi?id=42145 */
+# pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
+#endif
 		memcpy( p, out, outl );
+#ifdef __GNUC__
+# pragma GCC diagnostic pop
+#endif
 		p += outl;
 		i += inl;
 		continue;