Fix syntax check for SetAllocationTimeout.

This is missing in r18787.

BUG=
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/140413006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18789 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/runtime.h

@@ -100,7 +100,7 @@ namespace internal {
   F(GetOptimizationCount, 1, 1) \
   F(UnblockConcurrentRecompilation, 0, 1) \
   F(CompileForOnStackReplacement, 1, 1) \
-  F(SetAllocationTimeout, 2, 1) \
+  F(SetAllocationTimeout, -1 /* 2 || 3 */, 1) \
   F(AllocateInNewSpace, 1, 1) \
   F(AllocateInTargetSpace, 2, 1) \
   F(SetNativeFlag, 1, 1) \