there are 3600000 seconds in an hour

regression from...

commit 9830fd36
Date:   Sun Mar 17 08:36:26 2013 +0100

    date/time IDL datatypes incompatible change

Change-Id: I2f4b64a73b5529ba190acc678d907761bb568bbf
Reviewed-on: https://gerrit.libreoffice.org/54010Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Michael Stahl <Michael.Stahl@cib.de>
(cherry picked from commit 4fd9ba59)

tools/CppunitTest_tools_test.mk

@@ -16,6 +16,7 @@ $(eval $(call gb_CppunitTest_use_external,tools_test,boost_headers))
 $(eval $(call gb_CppunitTest_add_exception_objects,tools_test, \
     tools/qa/cppunit/test_bigint \
     tools/qa/cppunit/test_date \
+    tools/qa/cppunit/test_time \
     tools/qa/cppunit/test_fract \
     tools/qa/cppunit/test_inetmime \
     tools/qa/cppunit/test_pathutils \

tools/qa/cppunit/test_time.cxx

+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include <cppunit/TestFixture.h>
+#include <cppunit/extensions/HelperMacros.h>
+
+#include <tools/time.hxx>
+
+namespace tools
+{
+class TimeTest : public CppUnit::TestFixture
+{
+public:
+    void testTime();
+
+    CPPUNIT_TEST_SUITE(TimeTest);
+    CPPUNIT_TEST(testTime);
+    CPPUNIT_TEST_SUITE_END();
+};
+
+void TimeTest::testTime()
+{
+    Time aOrigTime(1, 56, 10);
+    auto nMS = aOrigTime.GetMSFromTime();
+
+    Time aNewTime(0);
+    aNewTime.MakeTimeFromMS(nMS);
+
+    CPPUNIT_ASSERT(bool(aOrigTime == aNewTime));
+}
+
+CPPUNIT_TEST_SUITE_REGISTRATION(TimeTest);
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */

tools/source/datetime/ttime.cxx

@@ -288,7 +288,7 @@ sal_Int32 tools::Time::GetMSFromTime() const
            ( nNanoSec/1000000 +
              nSec  * 1000 +
              nMin  * 60000 +
-             nHour * 360000 );
+             nHour * 3600000 );
 }
 
 void tools::Time::MakeTimeFromMS( sal_Int32 nMS )