Fix a test script problem causing crash8.test to fail when run with leak-sanitizer.

FossilOrigin-Name: 2c437f7a2c87129d00c71fa569315b68e0ba9514041d93503350c9ae9f080f17

test/tester.tcl

@@ -1731,6 +1731,9 @@ proc crashsql {args} {
       set msg "child process exited abnormally"
     }
   }
+  if {$r && [string match {*ERROR: LeakSanitizer*} $msg]} {
+    set msg "child process exited abnormally"
+  }
 
   lappend r $msg
 }