replace assert.h with cassert

The former was deprecated with C++14.

According to the C++11 and C++17 standards, both files are identical.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

src/db/DatabaseLock.hxx

@@ -29,7 +29,7 @@
 #include "thread/Mutex.hxx"
 #include "util/Compiler.h"
 
-#include <assert.h>
+#include <cassert>
 
 extern Mutex db_mutex;
 

src/db/DatabaseSong.cxx

@@ -26,7 +26,7 @@
 #include "util/UriExtract.hxx"
 #include "util/UriRelative.hxx"
 
-#include <assert.h>
+#include <cassert>
 
 DetachedSong
 DatabaseDetachSong(const Storage *storage, const LightSong &song) noexcept

src/db/PlaylistVector.cxx

@@ -21,8 +21,7 @@
 #include "db/DatabaseLock.hxx"
 
 #include <algorithm>
-
-#include <assert.h>
+#include <cassert>
 
 PlaylistVector::iterator
 PlaylistVector::find(const char *name) noexcept

src/db/VHelper.cxx

@@ -23,9 +23,9 @@
 #include "song/Filter.hxx"
 
 #include <algorithm>
+#include <cassert>
 #include <utility>
 
-#include <assert.h>
 #include <stdlib.h>
 #include <string.h>
 

src/db/plugins/simple/Directory.cxx

@@ -33,7 +33,8 @@
 #include "util/Alloc.hxx"
 #include "util/DeleteDisposer.hxx"
 
-#include <assert.h>
+#include <cassert>
+
 #include <string.h>
 #include <stdlib.h>
 

src/db/plugins/upnp/UpnpDatabasePlugin.cxx

@@ -40,10 +40,10 @@
 #include "util/RecursiveMap.hxx"
 #include "util/SplitString.hxx"
 
+#include <cassert>
 #include <string>
 #include <utility>
 
-#include <assert.h>
 #include <string.h>
 
 static const char *const rootid = "0";

src/db/update/Editor.cxx

@@ -24,7 +24,7 @@
 #include "db/plugins/simple/Directory.hxx"
 #include "db/plugins/simple/Song.hxx"
 
-#include <assert.h>
+#include <cassert>
 
 void
 DatabaseEditor::DeleteSong(Directory &dir, Song *del)

src/db/update/ExcludeList.cxx

@@ -29,7 +29,7 @@
 #include "util/StringStrip.hxx"
 #include "config.h"
 
-#include <assert.h>
+#include <cassert>
 
 #ifdef HAVE_CLASS_GLOB
 

src/db/update/InotifyUpdate.cxx

@@ -27,11 +27,11 @@
 #include "fs/Traits.hxx"
 #include "Log.hxx"
 
-#include <string>
-#include <map>
+#include <cassert>
 #include <forward_list>
+#include <map>
+#include <string>
 
-#include <assert.h>
 #include <sys/inotify.h>
 #include <string.h>
 #include <dirent.h>

src/db/update/Service.cxx

@@ -36,7 +36,7 @@
 #include "event/Loop.hxx"
 #endif
 
-#include <assert.h>
+#include <cassert>
 
 UpdateService::UpdateService(const ConfigData &_config,
 			     EventLoop &_loop, SimpleDatabase &_db,

src/db/update/Walk.cxx

@@ -38,10 +38,10 @@
 #include "util/UriExtract.hxx"
 #include "Log.hxx"
 
+#include <cassert>
 #include <exception>
 #include <memory>
 
-#include <assert.h>
 #include <string.h>
 #include <stdlib.h>
 #include <errno.h>