Fix var->let that broke sourcemap baselines

Author: danquirk

src/harness/harness.ts

@@ -735,7 +735,7 @@ module Harness {
 
     /** Functionality for compiling TypeScript code */
     export module Compiler {
-        /** Aggregate letious writes into a single array of lines. Useful for passing to the
+        /** Aggregate various writes into a single array of lines. Useful for passing to the
          *  TypeScript compiler to fill with source code or errors.
          */
         export class WriterAggregator implements ITextWriter {

src/harness/sourceMapRecorder.ts

@@ -329,14 +329,16 @@ module Harness.SourceMapRecoder {
         }
 
         function writeRecordedSpans() {
+            let markerIds: string[] = [];
+
             function getMarkerId(markerIndex: number) {
                 let markerId = "";
                 if (spanMarkerContinues) {
                     assert.isTrue(markerIndex === 0);
                     markerId = "1->";
                 }
                 else {
-                    let markerId = "" + (markerIndex + 1);
+                    markerId = "" + (markerIndex + 1);
                     if (markerId.length < 2) {
                         markerId = markerId + " ";
                     }
@@ -416,7 +418,6 @@ module Harness.SourceMapRecoder {
                 writeJsFileLines(currentJsLine);
 
                 // Emit markers
-                var markerIds: string[] = [];
                 iterateSpans(writeSourceMapMarker);
 
                 let jsFileText = getTextOfLine(currentJsLine, jsLineMap, jsFile.code);