[X86]: Make param names in header and body match for isCalleePop.

Differential Revision: http://reviews.llvm.org/D16246

llvm-svn: 257965

llvm/lib/Target/X86/X86ISelLowering.h

@@ -610,7 +610,7 @@ namespace llvm {
     /// Determines whether the callee is required to pop its
     /// own arguments. Callee pop is necessary to support tail calls.
     bool isCalleePop(CallingConv::ID CallingConv,
-                     bool is64Bit, bool IsVarArg, bool TailCallOpt);
+                     bool is64Bit, bool IsVarArg, bool GuaranteeTCO);
 
   }