Rewrite a comment and delete a unnecessary whitespace

pinentry-dmenu.c

@@ -679,8 +679,7 @@ main(int argc, char *argv[]) {
 	char *home = getenv("HOME");
 	config_t cfg;
 
-	// This is a little workaround to get the home dir even if the user used
-	// sudo or logged in as root
+	/* Get the home dir even if the user used sudo or logged in as root */
 	if (sudo_uid) {
 		i = atoi(sudo_uid);
 		pw = getpwuid(i);