[PATCH] Define PATH_MAX if it's not defined

[Salvo 'LtWorf' Tomaselli]

Fixes FTBFS on Hurd.
Also makes sure that if the file is truncated, there is a way of
knowing what is happening.
---
 qt-ui/subsurfacewebservices.cpp | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/qt-ui/subsurfacewebservices.cpp b/qt-ui/subsurfacewebservices.cpp
index c3661e0..4111f8c 100644
--- a/qt-ui/subsurfacewebservices.cpp
+++ b/qt-ui/subsurfacewebservices.cpp
@@ -29,6 +29,10 @@
 #include <QUrlQuery>
 #endif
 
+#ifndef PATH_MAX
+#define PATH_MAX 260
+#endif
+
 struct dive_table gps_location_table;
 static bool merge_locations_into_dives(void);
 
@@ -194,7 +198,9 @@ bool DivelogsDeWebServices::prepare_dives_for_divelogs(const QString &tempfile,
 		/*
 		 * Save the XML document into a zip file.
 		 */
-		snprintf(filename, PATH_MAX, "%d.xml", i + 1);
+		if (snprintf(filename, PATH_MAX, "%d.xml", i + 1)>= PATH_MAX) {
+			report_error(tr("long path was truncated").toUtf8());
+		}
 		s = zip_source_buffer(zip, membuf, streamsize, 1);
 		if (s) {
 			int64_t ret = zip_add(zip, filename, s);
-- 
2.1.0