Always generate code, even if it is a no-op, for CREATE and DROP statements

that use the IF EXISTS or IF NOT EXISTS clause. (CVS 3106)

FossilOrigin-Name: f8173e6aea8e90f64f5907f3f7ff4f34281f40da

src/build.c

@@ -22,7 +22,7 @@
 **     COMMIT
 **     ROLLBACK
 **
-** $Id: build.c,v 1.387 2006/02/17 12:25:15 danielk1977 Exp $
+** $Id: build.c,v 1.388 2006/02/18 16:36:45 drh Exp $
 */
 #include "sqliteInt.h"
 #include <ctype.h>
@@ -135,8 +135,8 @@ void sqlite3FinishCoding(Parse *pParse){
   if( !pParse->pVdbe ){
     if( pParse->rc==SQLITE_OK && pParse->nErr ){
       pParse->rc = SQLITE_ERROR;
+      return;
     }
-    return;
   }
 
   /* Begin by generating some termination code at the end of the
@@ -185,7 +185,7 @@ void sqlite3FinishCoding(Parse *pParse){
 
   /* Get the VDBE program ready for execution
   */
-  if( v && pParse->nErr==0 ){
+  if( v && pParse->nErr==0 && !sqlite3MallocFailed() ){
     FILE *trace = (db->flags & SQLITE_VdbeTrace)!=0 ? stdout : 0;
     sqlite3VdbeTrace(v, trace);
     sqlite3VdbeMakeReady(v, pParse->nVar, pParse->nMem+3,