Fix test_stat.c so that it does not cause compilation errors if SQLITE_OMIT_VIRTUALTABLE is defined.

FossilOrigin-Name: bf4fc0888705108aab997e1cb491fc7f9c64c443

src/test_stat.c

@@ -20,6 +20,8 @@
 
 #include "sqliteInt.h"
 
+#ifndef SQLITE_OMIT_VIRTUALTABLE
+
 /*
 ** Page paths:
 ** 
@@ -566,6 +568,8 @@ int sqlite3_dbstat_register(sqlite3 *db){
   return SQLITE_OK;
 }
 
+#endif
+
 #ifdef SQLITE_TEST
 #include <tcl.h>