Incorporate suggestions by Daniel Dunbar after his review.  Thanks Daniel!

1) Changed ValidateDwarfFileNumber() to isValidDwarfFileNumber() to be better
   named.  Since it is just a predicate and isn't actually changing any state.

2) Added a missing return in the comments for setCurrentDwarfLoc() in 
   include/llvm/MC/MCContext.h for fix formatting.

3) Changed clearDwarfLocSeen() to ClearDwarfLocSeen() since it does change
   state.

4) Simplified the last test in isValidDwarfFileNumber() to just a one line
   boolean test of MCDwarfFiles[FileNumber] != 0 for the final return statement.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115551 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/MCContext.cpp b/lib/MC/MCContext.cpp
index 1e65f87..9c747d1 100644
--- a/lib/MC/MCContext.cpp
+++ b/lib/MC/MCContext.cpp
@@ -255,15 +255,11 @@
   return FileNumber;
 }
 
-/// ValidateDwarfFileNumber - takes a dwarf file number and returns true if it
+/// isValidDwarfFileNumber - takes a dwarf file number and returns true if it
 /// currently is assigned and false otherwise.
-bool MCContext::ValidateDwarfFileNumber(unsigned FileNumber) {
+bool MCContext::isValidDwarfFileNumber(unsigned FileNumber) {
   if(FileNumber == 0 || FileNumber >= MCDwarfFiles.size())
     return false;
 
-  MCDwarfFile *&ExistingFile = MCDwarfFiles[FileNumber];
-  if (ExistingFile)
-    return true;
-  else
-    return false;
+  return MCDwarfFiles[FileNumber] != 0;
 }