Remove redundant code from getResolvedSignatureWorker

Author: Andarist

src/compiler/checker.ts

@@ -1839,10 +1839,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
     function getResolvedSignatureWorker(nodeIn: CallLikeExpression, candidatesOutArray: Signature[] | undefined, argumentCount: number | undefined, checkMode: CheckMode, editingArgument?: Node): Signature | undefined {
         const node = getParseTreeNode(nodeIn, isCallLikeExpression);
         apparentArgumentCount = argumentCount;
-        const res =
-            !node ? undefined :
-            editingArgument ? runWithInferenceBlockedFromSourceNode(editingArgument, () => getResolvedSignature(node, candidatesOutArray, checkMode)) :
-            getResolvedSignature(node, candidatesOutArray, checkMode);
+        const res = node && runWithInferenceBlockedFromSourceNode(editingArgument, () => getResolvedSignature(node, candidatesOutArray, checkMode));
         apparentArgumentCount = undefined;
         return res;
     }