git-svn: avoid md5 calculation entirely if SVN doesn't provide one
[git/git.git] / git-svn.perl
index fa46236..e350061 100755 (executable)
@@ -2472,12 +2472,16 @@ sub close_file {
        my $hash;
        my $path = $self->git_path($fb->{path});
        if (my $fh = $fb->{fh}) {
-               seek($fh, 0, 0) or croak $!;
-               my $md5 = Digest::MD5->new;
-               $md5->addfile($fh);
-               my $got = $md5->hexdigest;
-               die "Checksum mismatch: $path\n",
-                   "expected: $exp\n    got: $got\n" if (defined $exp && $got ne $exp);
+               if (defined $exp) {
+                       seek($fh, 0, 0) or croak $!;
+                       my $md5 = Digest::MD5->new;
+                       $md5->addfile($fh);
+                       my $got = $md5->hexdigest;
+                       if ($got ne $exp) {
+                               die "Checksum mismatch: $path\n",
+                                   "expected: $exp\n    got: $got\n";
+                       }
+               }
                sysseek($fh, 0, 0) or croak $!;
                if ($fb->{mode_b} == 120000) {
                        sysread($fh, my $buf, 5) == 5 or croak $!;