msi: Explicitly check the returned value against -1 as the variable is unsigned.
-rw-r--r-- 21703 .gitignore
-rw-r--r-- 33656 ANNOUNCE
-rw-r--r-- 14921 AUTHORS
-rw-r--r-- 26434 COPYING.LIB
-rw-r--r-- 2852980 ChangeLog
-rw-r--r-- 824 LICENSE
-rw-r--r-- 1324 LICENSE.OLD
-rw-r--r-- 9059 Make.rules.in
-rw-r--r-- 39916 Makefile.in
-rw-r--r-- 6655 README
-rw-r--r-- 20 VERSION
-rw-r--r-- 6603 aclocal.m4
-rwxr-xr-x 646316 configure
-rw-r--r-- 67535 configure.ac
drwxr-xr-x - dlls
drwxr-xr-x - documentation
drwxr-xr-x - fonts
drwxr-xr-x - include
drwxr-xr-x - libs
drwxr-xr-x - loader
drwxr-xr-x - programs
drwxr-xr-x - server
drwxr-xr-x - tools