Fix -fno-common build failure. Taken from
https://github.com/lastpass/lastpass-cli/pull/576

Index: process.c
--- process.c.orig
+++ process.c
@@ -127,6 +127,9 @@ out:
 #error "Please provide a pid_to_cmd for your platform"
 #endif
 
+int ARGC;
+char **ARGV;
+
 void process_set_name(const char *name)
 {
 	size_t argslen = 0;