Revise the affinity returned for expressions flagged as 'generic'.  Fix for [9a8b09f8e6].

FossilOrigin-Name: 92f7ad43dbfe4e02490df2f932c3c74fb89064d6
diff --git a/src/expr.c b/src/expr.c
index 08c121e..803d93f 100644
--- a/src/expr.c
+++ b/src/expr.c
@@ -33,7 +33,7 @@
 char sqlite3ExprAffinity(Expr *pExpr){
   int op;
   pExpr = sqlite3ExprSkipCollate(pExpr);
-  if( pExpr->flags & EP_Generic ) return SQLITE_AFF_NONE;
+  if( pExpr->flags & EP_Generic ) return 0;
   op = pExpr->op;
   if( op==TK_SELECT ){
     assert( pExpr->flags&EP_xIsSelect );