Update fb-bindings-eventblock.cc
Update fb-bindings-eventblock.cc

Fixes second part of #48 (cast issues)
jacobalberty/node-firebird-libfbclient,jacobalberty/node-firebird-libfbclient,jacobalberty/node-firebird-libfbclient,agebrock/node-firebird-libfbclient,xdenser/node-firebird-libfbclient,jacobalberty/node-firebird-libfbclient,agebrock/node-firebird-libfbclient,xdenser/node-firebird-libfbclient,agebrock/node-firebird-libfbclient,agebrock/node-firebird-libfbclient,xdenser/node-firebird-libfbclient,xdenser/node-firebird-libfbclient