fsmonitor: MINGW support for watchman integration

Instead of just taking $ENV{'PWD'}, use the same logic that converts
PWD to $git_work_tree on MSYS_NT in the watchman integration hook
script also on MINGW.

Signed-off-by: Ben Peart <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: benpeart

t/t7519/fsmonitor-watchman

@@ -36,7 +36,7 @@ my $system = `uname -s`;
 $system =~ s/[\r\n]+//g;
 my $git_work_tree;
 
-if ($system =~ m/^MSYS_NT/) {
+if ($system =~ m/^MSYS_NT/ || $system =~ m/^MINGW/) {
 	$git_work_tree = `cygpath -aw "\$PWD"`;
 	$git_work_tree =~ s/[\r\n]+//g;
 	$git_work_tree =~ s,\\,/,g;

templates/hooks--fsmonitor-watchman.sample

@@ -35,7 +35,7 @@ my $system = `uname -s`;
 $system =~ s/[\r\n]+//g;
 my $git_work_tree;
 
-if ($system =~ m/^MSYS_NT/) {
+if ($system =~ m/^MSYS_NT/ || $system =~ m/^MINGW/) {
 	$git_work_tree = `cygpath -aw "\$PWD"`;
 	$git_work_tree =~ s/[\r\n]+//g;
 	$git_work_tree =~ s,\\,/,g;