Update process.jl

Author: oxinabox

base/process.jl

@@ -797,7 +797,7 @@ function process_status(s::Process)
     process_signaled(s) ? "ProcessSignaled("*string(s.termsignal)*")" :
     #process_stopped(s) ? "ProcessStopped("*string(process_stop_signal(s))*")" :
     process_exited(s) ? "ProcessExited("*string(s.exitcode)*")" :
-    @assert(false, "process status error")
+    error("Process status error. Could not determine status of $s")
 end
 
 ## implementation of `cmd` syntax ##