Fix Vim version parsing to support 0 patch versions (e.g. 9.1.0)

Author: ychin

scripts/extract_vim_version

@@ -7,7 +7,7 @@ srcdir=$1
 # Logic was extracted from MacVim's configure.ac
 vim_major_version_string=`grep -m 1 'define.*VIM_VERSION_MAJOR' $srcdir/version.h|sed -E -e 's/^.*([[:digit:]]+).*/\1/'`
 vim_minor_version_string=`/usr/bin/grep -m 1 'define.*VIM_VERSION_MINOR' $srcdir/version.h|sed -E -e 's/^.*([[:digit:]]+).*/\1/'`
-snapshot=`/usr/bin/grep -C2 "Add new patch number below this line" $srcdir/version.c|tail -1|sed -E -e 's/^ *([[:digit:]]+),.*/\1/'`
+snapshot=`/usr/bin/grep -C2 "Add new patch number below this line" $srcdir/version.c|tail -1|sed -E -e 's/^ *([[:digit:]]+).*/\1/'`
 
 vim_short_version_string="$vim_major_version_string.$vim_minor_version_string.$snapshot"