File watcher: Reduce touch ignore duration

On Linux and Windows the file watcher can't distinguish between changes
that were caused by the process itself, like during a sync operation,
and external changes. To work around that the client keeps a list of
files it has touched and blocks notifications on these files for a bit.

The duration of this block was originally and arbitrarily set at 15
seconds. During manual tests I regularly thought there was a bug when
syncs didn't trigger, when the only problem was that my changes happened
too close to a previous sync operation.

This change reduces the duration to three seconds. I imagine that this
is still enough.

Also use std::chrono while at it.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/cmd/cmd.cpp b/src/cmd/cmd.cpp
index 41d89f62b..bb6365aa2 100644
--- a/src/cmd/cmd.cpp
+++ b/src/cmd/cmd.cpp
@@ -497,7 +497,7 @@ int main(int argc, char **argv)
     }
 
     // much lower age than the default since this utility is usually made to be run right after a change in the tests
-    SyncEngine::minimumFileAgeForUpload = 0;
+    SyncEngine::minimumFileAgeForUpload = std::chrono::milliseconds(0);
 
     int restartCount = 0;
 restart_sync: