Fix fatal error when can't listen on :50113 UDP.
Fix fatal error when can't listen on :50113 UDP.

ssokol/stratux,lukepalmer/stratux,timami/stratux,lukepalmer/stratux,timami/stratux,jpoirier/stratux,timami/stratux,ccicchitelli/stratux,ssokol/stratux,cyoung/stratux,westphae/stratux,timami/PlaneSense,egid/stratux,jpoirier/stratux,lukepalmer/stratux,egid/stratux,lukepalmer/stratux,ccicchitelli/stratux,stratux-fork/stratux,jpoirier/stratux,ssokol/stratux,cyoung/stratux,ssokol/stratux,stratux-fork/stratux,timami/PlaneSense,westphae/stratux,cyoung/stratux,westphae/stratux,ssokol/stratux,egid/stratux,timami/PlaneSense,cyoung/stratux,timami/PlaneSense,egid/stratux,timami/PlaneSense,jpoirier/stratux,ccicchitelli/stratux,timami/stratux,timami/PlaneSense,ccicchitelli/stratux,stratux-fork/stratux,ccicchitelli/stratux,kdknigga/stratux,lukepalmer/stratux,kdknigga/stratux,kdknigga/stratux,cyoung/stratux,stratux-fork/stratux,kdknigga/stratux,westphae/stratux,egid/stratux,ssokol/stratux,kdknigga/stratux,westphae/stratux,jpoirier/stratux,lukepalmer/stratux,jpoirier/stratux,kdknigga/stratux,egid/stratux,ccicchitelli/stratux,stratux-fork/stratux,timami/stratux,westphae/stratux,stratux-fork/stratux,timami/stratux,cyoung/stratux