sub/osd_font.otf: replace triangle volume by speaker glyph

The triangle icon has potentially questionable copyright issues, see
https://github.com/mpv-player/mpv/commit/a7e9bac13210834abd95380e89b5c3dae2336c52

TOOLS/mpv-osd-symbols.sfdir/font.props

@@ -22,7 +22,7 @@ OS2Version: 3
 OS2_WeightWidthSlopeOnly: 0
 OS2_UseTypoMetrics: 0
 CreationTime: 1408646554
-ModificationTime: 1492530412
+ModificationTime: 1492697855
 PfmFamily: 81
 TTFWeight: 400
 TTFWidth: 5
@@ -63,7 +63,7 @@ NameList: AGL For New Fonts
 DisplaySize: -72
 AntiAlias: 1
 FitToEm: 0
-WinInfo: 64 8 2
+WinInfo: 57344 8 2
 BeginPrivate: 8
 BlueValues 31 [-10 0 640 650 720 730 800 810]
 BlueScale 5 0.037

TOOLS/mpv-osd-symbols.sfdir/uniE009.glyph

@@ -1,16 +1,17 @@
 StartChar: uniE009
 Encoding: 57353 57353 9
-Width: 1000
-GlyphClass: 2
-Flags: MW
-HStem: 630 20G<1000 1000>
-VStem: 0 1000<150 150>
+Width: 880
+Flags: HMW
 LayerCount: 2
 Fore
 SplineSet
-1000 150 m 1
- 0 150 l 1
- 1000 650 l 1
- 1000 150 l 1
+716 10 m 1
+ 378 244 l 1
+ 165 244 l 1
+ 165 559 l 1
+ 379 559 l 1
+ 716 793 l 1
+ 716 10 l 1
 EndSplineSet
+Validated: 1
 EndChar