fix compile errors in sqlite

extra/db/db.factor

@@ -77,7 +77,7 @@ GENERIC: advance-row ( result-set -- ? )
 : do-bound-query ( obj query -- rows )
     [ bind-statement ] keep do-query ;
 
-: do-bound-command ( obj query -- rows )
+: do-bound-command ( obj query -- )
     [ bind-statement ] keep execute-statement ;
 
 : sql-query ( sql -- rows )

extra/db/sqlite/ffi/ffi.factor

@@ -109,7 +109,6 @@ TYPEDEF: void sqlite3_stmt
 
 LIBRARY: sqlite
 FUNCTION: int sqlite3_open ( char* filename, void* ppDb ) ;
-FUNCTION: int sqlite3_open_v2 ( char* filename, void* ppDb, int flags, char* zVfs ) ;
 FUNCTION: int sqlite3_close ( sqlite3* pDb ) ;
 FUNCTION: int sqlite3_prepare ( sqlite3* pDb, char* zSql, int nBytes, void* ppStmt, void* pzTail ) ;
 FUNCTION: int sqlite3_finalize ( sqlite3_stmt* pStmt ) ;

extra/db/sqlite/lib/lib.factor

@@ -80,7 +80,7 @@ TUPLE: sqlite-error n message ;
         sqlite-step
     ] if ;
 
-: sqlite-next ( prepared -- )
+: sqlite-next ( prepared -- ? )
     sqlite3_step step-complete? ;
 
 : sqlite-each ( statement quot -- )