Fix a crash that can occur if an error happens in a virtual table xSync() function. (CVS 3860)

FossilOrigin-Name: d1afdd8c9c756409275c116e662fc1e04bbe829e

manifest

@@ -1,5 +1,5 @@
-C Comment\schanges\sin\sthe\sioerr\stests.\s\sNo\schanges\sto\scode.\s(CVS\s3859)
-D 2007-04-19T12:30:54
+C Fix\sa\scrash\sthat\scan\soccur\sif\san\serror\shappens\sin\sa\svirtual\stable\sxSync()\sfunction.\s(CVS\s3860)
+D 2007-04-19T14:28:09
 F Makefile.in 8cab54f7c9f5af8f22fd97ddf1ecfd1e1860de62
 F Makefile.linux-gcc 2d8574d1ba75f129aba2019f0b959db380a90935
 F README 9c4e2d6706bdcc3efdd773ce752a8cdab4f90028
@@ -131,7 +131,7 @@ F src/vdbeapi.c 1fca7ff056d03f131caa6b1296bb221da65ed7f4
 F src/vdbeaux.c ef59545f53f90394283f2fd003375d3ebbf0bd6e
 F src/vdbefifo.c 3ca8049c561d5d67cbcb94dc909ae9bb68c0bf8f
 F src/vdbemem.c 981a113405bd9b80aeb71fe246a2f01708e8a8f7
-F src/vtab.c d80f61bb4756b1c9cebcd185879e88a88e22b006
+F src/vtab.c 6aad2b5cb117142be42047abb85919b98ef187c4
 F src/where.c fce0dad6b230eb7ea844e8b8667c074d07e3fdd5
 F tclinstaller.tcl 046e3624671962dc50f0481d7c25b38ef803eb42
 F test/aggerror.test a867e273ef9e3d7919f03ef4f0e8c0d2767944f2
@@ -459,7 +459,7 @@ F www/tclsqlite.tcl bb0d1357328a42b1993d78573e587c6dcbc964b9
 F www/vdbe.tcl 87a31ace769f20d3627a64fa1fade7fed47b90d0
 F www/version3.tcl 890248cf7b70e60c383b0e84d77d5132b3ead42b
 F www/whentouse.tcl fc46eae081251c3c181bd79c5faef8195d7991a5
-P 8795d11c3c5bb39d34bc5194621ce97097a320e7
-R 881cddcd5870bcd2cccfc66d1e72ef6f
-U drh
-Z 698c62f2beadbeaf34d69daba13ce366
+P b7ed0e1e88a019c830f56abb14658104a30a1c43
+R 5c592b147b197caa08e0e4cc017292eb
+U danielk1977
+Z 2c6cb30f9dd37ebc0e4aab421a093117

manifest.uuid

@@ -1 +1 @@
-b7ed0e1e88a019c830f56abb14658104a30a1c43
+d1afdd8c9c756409275c116e662fc1e04bbe829e

src/vtab.c

@@ -11,7 +11,7 @@
 *************************************************************************
 ** This file contains code used to help implement virtual tables.
 **
-** $Id: vtab.c,v 1.43 2007/04/19 00:24:35 drh Exp $
+** $Id: vtab.c,v 1.44 2007/04/19 14:28:09 danielk1977 Exp $
 */
 #ifndef SQLITE_OMIT_VIRTUALTABLE
 #include "sqliteInt.h"
@@ -533,7 +533,7 @@ int sqlite3VtabCallDestroy(sqlite3 *db, int iDb, const char *zTab)
 */
 static void callFinaliser(sqlite3 *db, int offset){
   int i;
-  for(i=0; i<db->nVTrans && db->aVTrans[i]; i++){
+  for(i=0; i<db->nVTrans && db->aVTrans && db->aVTrans[i]; i++){
     sqlite3_vtab *pVtab = db->aVTrans[i];
     int (*x)(sqlite3_vtab *);
     x = *(int (**)(sqlite3_vtab *))((char *)pVtab->pModule + offset);