Fix a harmless warning about comment formatting in the previous
check-in.  Simplify the ORDER BY dereferencing logic so that it avoids
unreachable branches.

FossilOrigin-Name: 0f6ec605e131ab3d53b9df32af0a3207146a9abbd22dcabd6ef050b92f96735d
diff --git a/src/expr.c b/src/expr.c
index a329ef4..e6df332 100644
--- a/src/expr.c
+++ b/src/expr.c
@@ -4953,7 +4953,7 @@
     }
 #ifndef SQLITE_OMIT_WINDOWFUNC
     /* Justification for the assert():
-    /* window functions have p->op==TK_FUNCTION but aggregate functions
+    ** window functions have p->op==TK_FUNCTION but aggregate functions
     ** have p->op==TK_AGG_FUNCTION.  So any comparison between an aggregate
     ** function and a window function should have failed before reaching
     ** this point.  And, it is not possible to have a window function and