date.c: Keep the comments clean.

Never know when the children might be reading over my shoulder,
for example. :-)

date.c

@@ -75,7 +75,7 @@ static unsigned char gmime_datetok_table[256] = {
 	111,111,111,111,111,111,111,111,111,111,111,111,111,111,111,111,
 };
 
-/* hrm, is there a library for this shit? */
+/* hrm, is there a library for this stuff? */
 static struct {
 	char *name;
 	int offset;