Bug 516298 - TM: fix three compiler warnings. r=brendan.

js/src/jsfun.cpp

@@ -1799,7 +1799,7 @@ JSFunction::sharpSlotBase(JSContext *cx)
 #if JS_HAS_SHARP_VARS
     JSAtom *name = js_Atomize(cx, "#array", 6, 0);
     if (name) {
-        uintN index;
+        uintN index = (uintN)-1;
 #ifdef DEBUG
         JSLocalKind kind =
 #endif

js/src/jsnum.cpp

@@ -1349,6 +1349,7 @@ js_strtointeger(JSContext *cx, const jschar *s, const jschar *send,
             intN j;
 
             bdr.base = base;
+            bdr.digit = 0;      // shut GCC up
             bdr.digitMask = 0;
             bdr.digits = start;
             bdr.end = s1;

js/src/jsregexp.cpp

@@ -2006,7 +2006,6 @@ typedef js::Vector<LIns *, 4, js::ContextAllocPolicy> LInsList;
 /* Dummy GC for nanojit placement new. */
 static GC gc;
 static avmplus::AvmCore s_core = avmplus::AvmCore();
-static avmplus::AvmCore* core = &s_core;
 
 /* Return the cached fragment for the given regexp, or create one. */
 static Fragment*