completions/inference: small formatting

gopls/internal/golang/completion/completion.go

@@ -2613,18 +2613,14 @@ func (c *completer) resetExpectedType(inf *candidateInference) []types.Type {
 func (c *completer) reverseInferExpectedTypeParam(inf candidateInference, expectedConstraint types.Type, typeParamIdx int, sig *types.Signature) candidateInference {
 	inf.typeName.wantTypeName = true
 	inf.typeName.isTypeParam = true
+	inf.objType = expectedConstraint
 
 	if typeParamIdx < 0 || typeParamIdx >= sig.TypeParams().Len() {
-		inf.objType = nil
 		return inf
 	}
 
-	substs, ok := reverseInferSignature(sig, c.resetExpectedType(&inf))
-	if ok && len(substs) > 0 && substs[typeParamIdx] != nil {
+	if substs, _ := reverseInferSignature(sig, c.resetExpectedType(&inf)); len(substs) > 0 && substs[typeParamIdx] != nil {
 		inf.objType = substs[typeParamIdx]
-	} else {
-		// Default to the constraint if no viable substition.
-		inf.objType = expectedConstraint
 	}
 	return inf
 }