bash/init: Force umask 0022

Override Fedora default umask (0002) with 0022 to restrict the write
permission to the user (not the group).
Signed-off-by: Cédric Marie <cedric@hjuvi.lautre.net>

bash/init

@@ -16,6 +16,10 @@
 
 PAINTED_SHELL_PATH=$(dirname $(dirname $BASH_SOURCE))
 
+# Override Fedora default umask (0002) to restrict the write permission to the
+# user (not the group)
+umask 0022
+
 # Enable extended color mode
 if [ "$TERM" = "xterm" ]; then
   export TERM=xterm-256color