Spell `necessary' correctly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7944 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AsmParser/llvmAsmParser.y b/lib/AsmParser/llvmAsmParser.y
index a06a4b7..a90b5f5 100644
--- a/lib/AsmParser/llvmAsmParser.y
+++ b/lib/AsmParser/llvmAsmParser.y
@@ -107,7 +107,7 @@
 
     if (I != GlobalRefs.end()) {
       GlobalVariable *OldGV = I->second;   // Get the placeholder...
-      I->first.second.destroy();  // Free string memory if neccesary
+      I->first.second.destroy();  // Free string memory if necessary
       
       // Loop over all of the uses of the GlobalValue.  The only thing they are
       // allowed to be is ConstantPointerRef's.