Do not assert fail or crash when a bytecode parse fails!

llvm-svn: 6284
diff --git a/llvm/lib/Bytecode/Reader/ReaderInternals.h b/llvm/lib/Bytecode/Reader/ReaderInternals.h
index 6709bc2..a8ee6fc 100644
--- a/llvm/lib/Bytecode/Reader/ReaderInternals.h
+++ b/llvm/lib/Bytecode/Reader/ReaderInternals.h
@@ -45,6 +45,9 @@
     FirstDerivedTyID = Type::FirstDerivedTyID;
   }
   ~BytecodeParser() {
+    freeState();
+  }
+  void freeState() {
     freeTable(Values);
     freeTable(LateResolveValues);
     freeTable(ModuleValues);