Add testing for sqlite3_trace() and fix a bug. (CVS 1760)

FossilOrigin-Name: 7a15391079ae9ce5360fa13e8779c8872885e789
diff --git a/src/main.c b/src/main.c
index e4c4006..0bb3496 100644
--- a/src/main.c
+++ b/src/main.c
@@ -14,7 +14,7 @@
 ** other files are for internal use by SQLite and should not be
 ** accessed by users of the library.
 **
-** $Id: main.c,v 1.240 2004/06/29 10:53:55 drh Exp $
+** $Id: main.c,v 1.241 2004/06/29 11:26:59 drh Exp $
 */
 #include "sqliteInt.h"
 #include "os.h"
@@ -981,7 +981,7 @@
       char *tmpSql = sqliteStrNDup(zSql, sParse.zTail - zSql);
       if( tmpSql ){
         db->xTrace(db->pTraceArg, tmpSql);
-        free(tmpSql);
+        sqliteFree(tmpSql);
       }else{
         /* If a memory error occurred during the copy,
         ** trace entire SQL string and fall through to the