Fix stragglers that were not properly renamed in the XDG standardization commits

diff --git a/extras/multimedia/.directory b/extras/multimedia/.directory
index 84e0c89..ed2e7cd 100644
--- a/extras/multimedia/.directory
+++ b/extras/multimedia/.directory
@@ -1,7 +1,7 @@
 [Desktop Entry]
 # Encoding: UTF-8
 Type=Directory
-Icon=player_stop
+Icon=media-playback-stop
 Comment=Multimedia
 Comment[pl]=Multimedia
 Comment[el]=����������������
diff --git a/extras/shutdown/.directory b/extras/shutdown/.directory
index 23f0e77..b67681f 100644
--- a/extras/shutdown/.directory
+++ b/extras/shutdown/.directory
@@ -1,7 +1,7 @@
 [Desktop Entry]
 # Encoding: UTF-8
 Type=Directory
-Icon=exit
+Icon=system-log-out
 Comment=Shut Down
 Comment[pl]=Zamykanie Systemu
 Comment[el]=����������������������
diff --git a/extras/shutdown/cancelshutdown.desktop b/extras/shutdown/cancelshutdown.desktop
index b2e5fa4..2ec0dfc 100644
--- a/extras/shutdown/cancelshutdown.desktop
+++ b/extras/shutdown/cancelshutdown.desktop
@@ -8,7 +8,7 @@
 Exec=/sbin/shutdown -c
 GenericName=
 GenericName[pl]=
-Icon=exit
+Icon=system-log-out
 MimeType=
 Path=
 StartupNotify=true
diff --git a/extras/shutdown/fsck.desktop b/extras/shutdown/fsck.desktop
index 7d2075a..d6c8ccf 100644
--- a/extras/shutdown/fsck.desktop
+++ b/extras/shutdown/fsck.desktop
@@ -8,7 +8,7 @@
 Exec=/sbin/shutdown -r -F 1
 GenericName=
 GenericName[pl]=
-Icon=exit
+Icon=system-log-out
 MimeType=
 Path=
 StartupNotify=true