small misspelling fixes.

src/spaces.cc

 // Copyright 2011 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 371 matching lines @@
       base = NULL;
     }
   } else {
     if (!reservation.Commit(base, commit_size, false)) {
       base = NULL;
     }
   }
 
   if (base == NULL) {
     // Failed to commit the body. Release the mapping and any partially
-    // commited regions inside it.
+    // committed regions inside it.
     reservation.Release();
     return NULL;
   }
 
   controller->TakeControl(&reservation);
   return base;
 }
 
 
 void Page::InitializeAsAnchor(PagedSpace* owner) {
@@ skipping 2773 matching lines @@
     object->ShortPrint();
     PrintF("\n");
   }
   printf(" --------------------------------------\n");
   printf(" Marked: %x, LiveCount: %x\n", mark_size, LiveBytes());
 }
 
 #endif  // DEBUG
 
 } }  // namespace v8::internal