Matroska & WAVPACK: fix more uninitialized variables

src/common/wavpack.cpp

@@ -22,6 +22,15 @@ const uint32_t sample_rates [] = {
    6000,  8000,  9600, 11025, 12000, 16000, 22050,
   24000, 32000, 44100, 48000, 64000, 88200, 96000, 192000 };
 
+wavpack_meta_t::wavpack_meta_t()
+  : channel_count(0)
+  , bits_per_sample(0)
+  , sample_rate(0)
+  , samples_per_block(0)
+  , has_correction(false)
+{
+}
+
 static void
 little_endian_to_native(void *data,
                         const char *format) {

src/common/wavpack.h

@@ -24,7 +24,7 @@
 #if defined(COMP_MSC)
 #pragma pack(push,1)
 #endif
-typedef struct PACKED_STRUCTURE {
+struct PACKED_STRUCTURE wavpack_header_t {
   char ck_id [4];         // "wvpk"
   uint32_t ck_size;       // size of entire frame (minus 8, of course)
   uint16_t version;       // 0x403 for now
@@ -35,18 +35,20 @@ typedef struct PACKED_STRUCTURE {
   uint32_t block_samples; // # samples in this block
   uint32_t flags;         // various flags for id and decoding
   uint32_t crc;           // crc for actual decoded data
-} wavpack_header_t;
+};
 #if defined(COMP_MSC)
 #pragma pack(pop)
 #endif
 
-typedef struct {
+struct wavpack_meta_t {
   int channel_count;
   int bits_per_sample;
   uint32_t sample_rate;
   uint32_t samples_per_block;
   bool has_correction;
-} wavpack_meta_t;
+
+  wavpack_meta_t();
+};
 
 // or-values for "flags"
 

src/input/r_matroska.h

@@ -100,6 +100,7 @@ struct kax_track_t {
     , passthrough(false)
     , min_cache(0)
     , max_cache(0)
+    , max_blockadd_id(0)
     , lacing_flag(true)
     , default_duration(0)
     , v_width(0)