Fix a harmless compiler warning.

FossilOrigin-Name: 63c67a54b4d3e501f3059dcdfc6bb50c6b8dad63a34eb773e4408d9e4e780d7a
diff --git a/src/expr.c b/src/expr.c
index ba464f9..61b45b9 100644
--- a/src/expr.c
+++ b/src/expr.c
@@ -5299,7 +5299,7 @@
       p->nThis++;
     }else if( nSrc==0 || pExpr->iTable<pSrc->a[0].iCursor ){
       /* In a well-formed parse tree (no name resolution errors),
-      /* TK_COLUMN nodes with smaller Expr.iTable values are in an
+      ** TK_COLUMN nodes with smaller Expr.iTable values are in an
       ** outer context.  Those are the only ones to count as "other" */
       p->nOther++;
     }