pacman-key: remove errexit flag from shebang

We're ill equipped to be using this flag as we don't trap and respond to
the ERR signal. The result is that if is ever tripped, pacman-key will
instantly exit with no indication of why. At the same time, we're
already fairly good about doing our own error checking and verbalizing
it before dying.

Signed-off-by: Dave Reisner <dreisner@archlinux.org>
Signed-off-by: Dan McGee <dan@archlinux.org>

scripts/pacman-key.sh.in

@@ -1,4 +1,4 @@
-#!/bin/bash -e
+#!/bin/bash
 #
 #   pacman-key - manages pacman's keyring
 #                Based on apt-key, from Debian