Bug 601771 - TM: possibly uninitialized variable in jsclone.cpp. r=jorendorff via IRC.

js/src/jsclone.cpp

@@ -159,7 +159,7 @@ SCInput::read(uint64_t *p)
 bool
 SCInput::readPair(uint32_t *tagp, uint32_t *datap)
 {
-    uint64_t u;
+    uint64_t u = 0;     /* initialize to shut GCC up */
     bool ok = read(&u);
     if (ok) {
         *tagp = uint32_t(u >> 32);