[clang][bytecode] Move CheckExtern call into isAccessible() block (#152926)

This is where it belongs, but it was accidentally left where it was.

Author: tbaederr

clang/lib/AST/ByteCode/Interp.cpp

@@ -885,12 +885,12 @@ bool CheckStore(InterpState &S, CodePtr OpPC, const Pointer &Ptr) {
   if (!Ptr.block()->isAccessible()) {
     if (!CheckLive(S, OpPC, Ptr, AK_Assign))
       return false;
+    if (!CheckExtern(S, OpPC, Ptr))
+      return false;
     return CheckDummy(S, OpPC, Ptr.block(), AK_Assign);
   }
   if (!CheckLifetime(S, OpPC, Ptr.getLifetime(), AK_Assign))
     return false;
-  if (!CheckExtern(S, OpPC, Ptr))
-    return false;
   if (!CheckRange(S, OpPC, Ptr, AK_Assign))
     return false;
   if (!CheckActive(S, OpPC, Ptr, AK_Assign))