[Decode] Fix UNCAUGHT_EXCEPT in AV1/H264/H265 decoder destructors

Wrap Close() calls in VideoDECODEAV1, VideoDECODEH264, and
VideoDECODEH265 destructors with try { } catch (...) { } to prevent
exceptions from propagating out of implicitly-noexcept destructors.

Close() acquires mutexes (std::lock_guard<std::mutex> or
UMC::AutomaticUMCMutex) which can throw std::system_error or
std::bad_alloc on lock failure. Since C++11 destructors are implicitly
noexcept, any uncaught exception causes std::terminate().

Fixes Coverity CIDs: 2893009 (AV1), 3593332 (H264), 3593335 (H265).

Author: intel-mediadev

_studio/mfx_lib/decode/av1/src/mfx_av1_dec_decode.cpp

@@ -148,7 +148,7 @@ VideoDECODEAV1::~VideoDECODEAV1()
 {
     if (m_is_init)
     {
-        Close();
+        try { Close(); } catch (...) {}
     }
 }
 

_studio/mfx_lib/decode/h264/src/mfx_h264_dec_decode.cpp

@@ -205,7 +205,7 @@ VideoDECODEH264::VideoDECODEH264(VideoCORE *core, mfxStatus * sts)
 
 VideoDECODEH264::~VideoDECODEH264(void)
 {
-    Close();
+    try { Close(); } catch (...) {}
 }
 
 mfxStatus VideoDECODEH264::Init(mfxVideoParam *par)

_studio/mfx_lib/decode/h265/src/mfx_h265_dec_decode.cpp

@@ -138,7 +138,7 @@ VideoDECODEH265::VideoDECODEH265(VideoCORE *core, mfxStatus * sts)
 
 VideoDECODEH265::~VideoDECODEH265(void)
 {
-    Close();
+    try { Close(); } catch (...) {}
 }
 
 // Initialize decoder instance