buildMobileVLCKit: bump hash to include copy fixes and chromecast fixes

(cherry picked from commit 55fe1bb2e543dbab09e4e37cb3d0625e85310bb6)

compileAndBuildVLCKit.sh

@@ -25,7 +25,7 @@ OSVERSIONMINLDFLAG=ios_version_min
 ROOT_DIR=empty
 FARCH="all"
 
-TESTEDHASH="b22b91763" # libvlc hash that this version of VLCKit is build on
+TESTEDHASH="ff4078ec7" # libvlc hash that this version of VLCKit is build on
 
 if [ -z "$MAKE_JOBS" ]; then
     CORE_COUNT=`sysctl -n machdep.cpu.core_count`