small improvement with direct assignment instead of addition assignment (#1297)

Author: Janther

src/slang-nodes/SlangNode.ts

@@ -134,7 +134,7 @@ export class SlangNode {
 
  if (start - leadingOffset === loc.start) {
  loc.leadingOffset = leadingOffset;
- loc.start += leadingOffset;
+ loc.start = start;
  break;
  }
  }
@@ -147,7 +147,7 @@ export class SlangNode {
 
  if (end + trailingOffset === loc.end) {
  loc.trailingOffset = trailingOffset;
- loc.end -= trailingOffset;
+ loc.end = end;
  break;
  }
  }