Resolve the static-analysis bustage from bug 498938 by recognizing COND_EXPR.

xpcom/tests/static-checker/StackCond.cpp

@@ -0,0 +1,12 @@
+#include "nscore.h"
+
+struct A
+{
+};
+
+A* tfunc(int len)
+{
+  A arr[5];
+  A* a = len <= 5 ? arr : new A[len];
+  return a;
+}