Fix a bunch of spelling mistakes :\

src/stub-cache-ia32.cc

Index: src/stub-cache-ia32.cc
diff --git a/src/stub-cache-ia32.cc b/src/stub-cache-ia32.cc
index f35877f6cbb36bd558cd9e613fb91a1318172290..5acc1dfefae2faf5a7c8d3867353d3b05e6960a6 100644
--- a/src/stub-cache-ia32.cc
+++ b/src/stub-cache-ia32.cc
@@ -394,7 +394,7 @@ void StubCompiler::GenerateStoreField(MacroAssembler* masm,
   // Perform map transition for the receiver if necessary.
   if ((transition != NULL) && (object->map()->unused_property_fields() == 0)) {
     // The properties must be extended before we can store the value.
-    // We jump to a runtime call that extends the propeties array.
+    // We jump to a runtime call that extends the properties array.
     __ mov(ecx, Immediate(Handle<Map>(transition)));
     Handle<Code> ic(Builtins::builtin(storage_extend));
     __ jmp(ic, RelocInfo::CODE_TARGET);