Return Object* instead of MaybeObject* from runtime calls.

src/mips/regexp-macro-assembler-mips.cc

Index: src/mips/regexp-macro-assembler-mips.cc
diff --git a/src/mips/regexp-macro-assembler-mips.cc b/src/mips/regexp-macro-assembler-mips.cc
index 49dec3c0246272dcf52d4ed00d31eac502de1a8b..6ca8a3d57b835dee05cfa3d5198a8ca6b61c5e0b 100644
--- a/src/mips/regexp-macro-assembler-mips.cc
+++ b/src/mips/regexp-macro-assembler-mips.cc
@@ -1153,7 +1153,7 @@ int RegExpMacroAssemblerMIPS::CheckStackGuardState(Address* return_address,
   ASSERT(*return_address <=
       re_code->instruction_start() + re_code->instruction_size());
 
-  MaybeObject* result = Execution::HandleStackGuardInterrupt(isolate);
+  Object* result = Execution::HandleStackGuardInterrupt(isolate);
 
   if (*code_handle != re_code) {  // Return address no longer valid.
     int delta = code_handle->address() - re_code->address();