add missing error checking to simple example
add missing error checking to simple example

danderson/go-sqlite3,helight/helight_code,helight/helight_code,danderson/go-sqlite3,danderson/go-sqlite3,helight/helight_code,helight/helight_code,helight/helight_code,lyonel/go-sqlite3,helight/helight_code,xeodou/go-sqlcipher,mattn/go-sqlite3,accense/go-sqlite3,shaxbee/go-sqlite3,mattn/go-sqlite3,shaxbee/go-sqlite3,helight/helight_code,helight/helight_code,lyonel/go-sqlite3,xeodou/go-sqlcipher,xeodou/go-sqlcipher,accense/go-sqlite3,accense/go-sqlite3,lyonel/go-sqlite3,shaxbee/go-sqlite3,mattn/go-sqlite3,helight/helight_code