Increase old space in cctest/test-api/HugeConsStringOutOfMemory test.

This test is failing on MIPS since r11715 (a7d6f92c),
it seems that after the modifications in bootstrapper.cc,
this test runs out of old generation space on MIPS.

TEST=cctest/test-api/HugeConsStringOutOfMemory

BUG=

Review URL: https://chromiumcodereview.appspot.com/10533148
Patch from Akos Palfi <palfia@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11814 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

test/cctest/test-api.cc

@@ -2697,7 +2697,7 @@ TEST(HugeConsStringOutOfMemory) {
   static const int K = 1024;
   v8::ResourceConstraints constraints;
   constraints.set_max_young_space_size(256 * K);
-  constraints.set_max_old_space_size(2 * K * K);
+  constraints.set_max_old_space_size(3 * K * K);
   v8::SetResourceConstraints(&constraints);
 
   // Execute a script that causes out of memory.