post_spec: fix warnings
post_spec: fix warnings

Several "unused variable" warnings (due to replacing unused instance
variables with unused locals) and one warning about ambiguous
lack-of-brackets.

Br3nda/growstuff,Growstuff/growstuff,yez/growstuff,Br3nda/growstuff,Growstuff/growstuff,pozorvlak/growstuff,maco/growstuff,cesy/growstuff,cesy/growstuff,dv2/growstuff,cesy/growstuff,pozorvlak/growstuff,maco/growstuff,yez/growstuff,Br3nda/growstuff,Growstuff/growstuff,maco/growstuff,dv2/growstuff,Br3nda/growstuff,pozorvlak/growstuff,yez/growstuff,maco/growstuff,dv2/growstuff,yez/growstuff,pozorvlak/growstuff,cesy/growstuff,dv2/growstuff,Growstuff/growstuff