remove calls to calloc if the allocated memory is not used (it was already being done for malloc)
fix a few typos found by Chad in my previous commit

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156110 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/MemoryBuiltins.cpp b/lib/Analysis/MemoryBuiltins.cpp
index 347a7ea..9695ae1 100644
--- a/lib/Analysis/MemoryBuiltins.cpp
+++ b/lib/Analysis/MemoryBuiltins.cpp
@@ -182,7 +182,7 @@
 
 
 //===----------------------------------------------------------------------===//
-//  clloc Call Utility Functions.
+//  calloc Call Utility Functions.
 //
 
 static bool isCallocCall(const CallInst *CI) {
@@ -197,7 +197,7 @@
   
   // Check malloc prototype.
   // FIXME: workaround for PR5130, this will be obsolete when a nobuiltin 
-  // attribute will exist.
+  // attribute exists.
   FunctionType *FTy = Callee->getFunctionType();
   return FTy->getReturnType() == Type::getInt8PtrTy(FTy->getContext()) &&
   FTy->getNumParams() == 2 &&