Merge pull request #286 from nuts23/patch-5

Fix typo in AllocBoxToStack.cpp

Author: lattner

lib/SILPasses/Scalar/AllocBoxToStack.cpp

@@ -401,7 +401,7 @@ static bool rewriteAllocBoxAsAllocStack(AllocBoxInst *ABI,
     return false;
 
   // Promote this alloc_box to an alloc_stack. Insert the alloc_stack
-  // at the beginning of the funtion.
+  // at the beginning of the function.
   auto &Entry = ABI->getFunction()->front();
   SILBuilder BuildAlloc(&Entry, Entry.begin());
   BuildAlloc.setCurrentDebugScope(ABI->getDebugScope());