Simplify boolean conditional return statements.

Patch by Richard <legalize@xmission.com>

llvm-svn: 238134

llvm/lib/Bitcode/Reader/BitstreamReader.cpp

@@ -48,10 +48,7 @@ bool BitstreamCursor::EnterSubBlock(unsigned BlockID, unsigned *NumWordsP) {
   if (NumWordsP) *NumWordsP = NumWords;
 
   // Validate that this block is sane.
-  if (CurCodeSize == 0 || AtEndOfStream())
-    return true;
-
-  return false;
+  return CurCodeSize == 0 || AtEndOfStream();
 }
 
 static uint64_t readAbbreviatedField(BitstreamCursor &Cursor,