fix compiler warning "suggest parentheses around assignment used as truth value [-Wparentheses]" in util.cpp
fix compiler warning "suggest parentheses around assignment used as truth
value [-Wparentheses]" in util.cpp

Crowndev/crowncoin,wiggi/fairbrix-0.6.3,domob1812/crowncoin,dobbscoin/dobbscoin-source,domob1812/crowncoin,wiggi/fairbrix-0.6.3,wiggi/fairbrix-0.6.3,Crowndev/crowncoin,Earlz/dobbscoin-source,domob1812/crowncoin,dobbscoin/dobbscoin-source,Infernoman/crowncoin,syscoin/syscoin,Infernoman/crowncoin,syscoin/syscoin,syscoin/syscoin,Earlz/dobbscoin-source,domob1812/crowncoin,wiggi/fairbrix-0.6.3,Crowndev/crowncoin,dobbscoin/dobbscoin-source,Infernoman/crowncoin,Earlz/dobbscoin-source,Earlz/dobbscoin-source,Crowndev/crowncoin,syscoin/syscoin,Earlz/dobbscoin-source,Infernoman/crowncoin,syscoin/syscoin,domob1812/crowncoin,dobbscoin/dobbscoin-source,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,Infernoman/crowncoin,Crowndev/crowncoin,Earlz/dobbscoin-source,dobbscoin/dobbscoin-source,dobbscoin/dobbscoin-source,Crowndev/crowncoin,wiggi/fairbrix-0.6.3,Infernoman/crowncoin,domob1812/crowncoin