tree: add clang-format off labels

When I figure out how to make clang-format ignore struct array
initialisers, I'll get rid of this.

lprocess.c

@@ -22,7 +22,7 @@
 #define PID_MAX 8 /* rounded to the nearest even number */
 #define PROCESS_MAX 256
 
-/* signals */
+/* clang-format off */
 static const int signals[] = {
 	SIGHUP,
 	SIGINT,
@@ -357,6 +357,8 @@ process_terminate(lua_State *L)
 	return sigsend(L, pid, "SIGTERM");
 }
 
+/* clang-format off */
+
 static const luaL_Reg proclib[] = {
 	{"kill",      process_kill},
 	{"pid",       process_pid},