Continuing improvements to error reporting and the sqlite3_log() routine.

FossilOrigin-Name: edea3bb740ddd096a46e00678b59d465bb1e2903
diff --git a/src/vdbeblob.c b/src/vdbeblob.c
index 2871f1a..829b6de 100644
--- a/src/vdbeblob.c
+++ b/src/vdbeblob.c
@@ -318,7 +318,7 @@
   Vdbe *v;
   sqlite3 *db;
 
-  if( p==0 ) return SQLITE_MISUSE;
+  if( p==0 ) return SQLITE_MISUSE_BKPT;
   db = p->db;
   sqlite3_mutex_enter(db->mutex);
   v = (Vdbe*)p->pStmt;