This change removes an "initialization" warning.

Even though variable in question could not 
be initialized before use, the code was such that 
the compiler had no way of knowing that.

llvm-svn: 160081

llvm/lib/Target/Mips/MipsAsmPrinter.cpp

@@ -353,10 +353,9 @@ bool MipsAsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNum,
         }
         return true;
       }
-      unsigned RegOp;
-      if (Subtarget->isGP64bit())
-        RegOp = OpNum;
-      else {
+
+      unsigned RegOp = OpNum;
+      if (!Subtarget->isGP64bit()){
         // Endianess reverses which register holds the high or low value
         switch(ExtraCode[0]) {
         case 'D':