Bug 1649655 - [MIPS] Add CodeGenerator::visitWasmRegisterResult function. r=lth

Differential Revision: https://phabricator.services.mozilla.com/D81804

js/src/jit/mips-shared/CodeGenerator-mips-shared.cpp

@@ -1350,6 +1350,9 @@ void CodeGenerator::visitBitAndAndBranch(LBitAndAndBranch* lir) {
              lir->ifFalse());
 }
 
+// See ../CodeGenerator.cpp for more information.
+void CodeGenerator::visitWasmRegisterResult(LWasmRegisterResult* lir) {}
+
 void CodeGenerator::visitWasmUint32ToDouble(LWasmUint32ToDouble* lir) {
   masm.convertUInt32ToDouble(ToRegister(lir->input()),
                              ToFloatRegister(lir->output()));