perl/perl-Sys-Mmap: Fixed PRGNAM in build script

Signed-off-by: Robby Workman <rworkman@slackbuilds.org>

perl/perl-Sys-Mmap/perl-Sys-Mmap.SlackBuild

@@ -1,6 +1,7 @@
 #!/bin/sh
 
 # Slackware build script for perl-Sys-Mmap
+
 # Copyright 2010  V'yacheslav Stetskevych <slava18@gmail.com>
 # All rights reserved.
 #
@@ -22,12 +23,13 @@
 # OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 # ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-SRCNAM=Sys-Mmap
-PRGNAM=perl-$SRCNAM
+PRGNAM=perl-Sys-Mmap
 VERSION=${VERSION:-0.17}
 BUILD=${BUILD:-1}
 TAG=${TAG:-_SBo}
 
+SRCNAM=Sys-Mmap
+
 if [ -z "$ARCH" ]; then
   case "$( uname -m )" in
     i?86) ARCH=i586 ;;