Fix trim loop condition and outer continue

src/extender.cpp

@@ -1070,10 +1070,10 @@ namespace Sass {
  // the result so that, if two selectors are identical, we keep the first one.
  std::vector<ComplexSelectorObj> result; size_t numOriginals = 0;
 
- // Use label to quit outer loop
- redo:
+ size_t i = selectors.size();
+ outer: // Use label to continue loop
+ while (--i != std::string::npos) {
 
- for (size_t i = selectors.size() - 1; i != std::string::npos; i--) {
  const ComplexSelectorObj& complex1 = selectors[i];
  // Check if selector in known in existing "originals"
  // For custom behavior dart-sass had `isOriginal(complex1)`
@@ -1083,7 +1083,7 @@ namespace Sass {
  for (size_t j = 0; j < numOriginals; j++) {
  if (ObjEqualityFn(result[j], complex1)) {
  rotateSlice(result, 0, j + 1);
- goto redo;
+ goto outer;
  }
  }
  result.insert(result.begin(), complex1);