Remove the NULL-related check in wvstring.t.cc, and the warning it caused.
tree7279b76700e15684909e6a3d1d023d2ade50b53e
-rw-r--r-- 191 .gitignore
drwxr-xr-x - Docs
-rw-r--r-- 43698 Doxyfile
-rw-r--r-- 25265 LICENSE
-rw-r--r-- 6720 Makefile
-rw-r--r-- 205 README
-rw-r--r-- 693 README.TESTS
drwxr-xr-x - argp
-rwxr-xr-x 30 autogen.sh
-rw-r--r-- 868 config.defaults.mk
-rwxr-xr-x 43499 config.guess
-rw-r--r-- 1404 config.mk.in
-rwxr-xr-x 31743 config.sub
drwxr-xr-x - configfile
-rwxr-xr-x 542 configure-mingw32
-rw-r--r-- 17602 configure.ac
drwxr-xr-x - crypto
drwxr-xr-x - dbus
drwxr-xr-x - debian
-rwxr-xr-x 193 ee
-rwxr-xr-x 436 gen-cc
drwxr-xr-x - include
-rwxr-xr-x 2186 install-sh
-rw-r--r-- 1884 install.mk
drwxr-xr-x - ipstreams
drwxr-xr-x - linuxstreams
drwxr-xr-x - pkgconfig
drwxr-xr-x - qt
drwxr-xr-x - streams
drwxr-xr-x - uniconf
drwxr-xr-x - urlget
drwxr-xr-x - utils
-rw-r--r-- 3127 win32.mk
drwxr-xr-x - win32
-rw-r--r-- 2559 wvrules-posix.mk
-rw-r--r-- 7131 wvrules.mk
-rw-r--r-- 4592 wvstreams.supp
-rw-r--r-- 1553 wvtestmain.cc
-rwxr-xr-x 2652 wvtestrunner.pl