[server] fix shift operation bug in SOURCE subnet processing spotted by Coverity
-rw-r--r-- 1748 AUTHORS
-rw-r--r-- 18002 COPYING
-rw-r--r-- 8954 CREDITS
-rw-r--r-- 35707 ChangeLog
-rw-r--r-- 3126 ChangeLog.git
-rw-r--r-- 9416 INSTALL
-rw-r--r-- 16180 Makefile.am
-rw-r--r-- 2409 NEWS
lrwxrwxrwx 9 README -> README.md
-rw-r--r-- 8000 README.md
-rw-r--r-- 6 VERSION
drwxr-xr-x - android
-rwxr-xr-x 486 autogen.sh
drwxr-xr-x - client
drwxr-xr-x - common
-rw-r--r-- 18529 configure.ac
drwxr-xr-x - doc
drwxr-xr-x - extras
-rw-r--r-- 5430 fwknop.spec
drwxr-xr-x - iphone
drwxr-xr-x - lib
drwxr-xr-x - m4
drwxr-xr-x - perl
drwxr-xr-x - python
drwxr-xr-x - server
drwxr-xr-x - test
drwxr-xr-x - win32