small misspelling fixes.

src/lithium-allocator.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 2037 matching lines @@
       InstructionAt(pos.InstructionIndex())->IsLabel();
 }
 
 
 LiveRange* LAllocator::SplitRangeAt(LiveRange* range, LifetimePosition pos) {
   ASSERT(!range->IsFixed());
   TraceAlloc("Splitting live range %d at %d\n", range->id(), pos.Value());
 
   if (pos.Value() <= range->Start().Value()) return range;
 
-  // We can't properly connect liveranges if split occured at the end
+  // We can't properly connect liveranges if split occurred at the end
   // of control instruction.
   ASSERT(pos.IsInstructionStart() ||
          !chunk_->instructions()->at(pos.InstructionIndex())->IsControl());
 
   int vreg = GetVirtualRegister();
   if (!AllocationOk()) return NULL;
   LiveRange* result = LiveRangeFor(vreg);
   range->SplitAt(pos, result, zone_);
   return result;
 }
@@ skipping 119 matching lines @@
     LiveRange* current = live_ranges()->at(i);
     if (current != NULL) current->Verify();
   }
 }
 
 
 #endif
 
 
 } }  // namespace v8::internal