please.sh upgrade git-lfs: fix sed expression to update folder

When the folder is not the top-level directory, it contains slashes,
which have special meaning in sed expressions and need to be escaped.

This problem did not occur before because `upgrade git-lfs` was only
used to upgrade to version 2.2.0 so far, and that version's .zip files
contained the git-lfs.exe files at the top-level directory.

Signed-off-by: Johannes Schindelin <[email protected]>

Author: dscho

please.sh

@@ -2352,10 +2352,10 @@ upgrade () { # <package>
 		 sha256sum -c - &&
 		 dir32="$(unzip -l $zip32 |
 			 sed -n 's/^.\{28\} *\(.*\)\/\?git-lfs\.exe/\1/p' |
-			 sed 's/^$/./')" &&
+			 sed -e 's/^$/./' -e 's/\//\\&/g')" &&
 		 dir64="$(unzip -l $zip64 |
 			 sed -n 's/^.\{28\} *\(.*\)\/\?git-lfs\.exe/\1/p' |
-			 sed 's/^$/./')" &&
+			 sed -e 's/^$/./' -e 's/\//\\&/g')" &&
 		 s1='s/\(folder=\)[^\n]*/\1' &&
 		 s2='s/\(sha256sum=\)[0-9a-f]*/\1'
 		 sed -i -e "s/^\\(pkgver=\\).*/\\1$version/" \