[Profile][CoverageMapping] MC/DC Fix passing FileID for DecisionRegion

Fixes oversight in commit 8ecbb04 in which
FileID was not being set when creating a new MC/DC DecisionRegion.

Author: evodius96

llvm/include/llvm/ProfileData/Coverage/CoverageMapping.h

@@ -295,12 +295,11 @@ struct CounterMappingRegion {
         Kind(Kind) {}
 
   CounterMappingRegion(MCDCParameters MCDCParams, unsigned FileID,
-                       unsigned ExpandedFileID, unsigned LineStart,
-                       unsigned ColumnStart, unsigned LineEnd,
-                       unsigned ColumnEnd, RegionKind Kind)
-      : MCDCParams(MCDCParams), ExpandedFileID(ExpandedFileID),
-        LineStart(LineStart), ColumnStart(ColumnStart), LineEnd(LineEnd),
-        ColumnEnd(ColumnEnd), Kind(Kind) {}
+                       unsigned LineStart, unsigned ColumnStart,
+                       unsigned LineEnd, unsigned ColumnEnd, RegionKind Kind)
+      : MCDCParams(MCDCParams), FileID(FileID), LineStart(LineStart),
+        ColumnStart(ColumnStart), LineEnd(LineEnd), ColumnEnd(ColumnEnd),
+        Kind(Kind) {}
 
   static CounterMappingRegion
   makeRegion(Counter Count, unsigned FileID, unsigned LineStart,
@@ -354,7 +353,7 @@ struct CounterMappingRegion {
   makeDecisionRegion(MCDCParameters MCDCParams, unsigned FileID,
                      unsigned LineStart, unsigned ColumnStart, unsigned LineEnd,
                      unsigned ColumnEnd) {
-    return CounterMappingRegion(MCDCParams, FileID, 0, LineStart, ColumnStart,
+    return CounterMappingRegion(MCDCParams, FileID, LineStart, ColumnStart,
                                 LineEnd, ColumnEnd, MCDCDecisionRegion);
   }