fix bug in ReadGotoBeginning (to finally seek correctly)

include/ctrff/bcstm.hpp

@@ -138,6 +138,7 @@ class CTRFF_API BCSTM {
     DSP_ADPCM_Param() {}
     PD::u16 Coefficients[0x10];
   };
+
   struct DSP_ADPCM_Context {
     DSP_ADPCM_Context()
         : PredictorScale(0),

source/bcstm.cpp

@@ -147,15 +147,10 @@ CTRFF_API void BCSTM::ReadGotoBeginning(bool use_loop_beg) {
   size_t off = pDataBlockRef.Ref.Offset + 0x20;
   /** Shift to loop start if enabled */
   if (use_loop_beg) {
-    off += GetNumBlocks() * GetNumChannels() * GetLoopStart();
-    // off += GetNumChannels() * pInfoBlock.StreamInfo.LoopStartFrame;
-  }
-  // block_size * channel_count * loop_start
-  try {
-    pFile.seekg(off, std::ios::beg);
-  } catch (const std::exception& e) {
-    throw std::runtime_error(e.what());
+    off += GetLoopStart() * GetBlockSize() * GetNumChannels();
   }
+  pFile.seekg(off, std::ios::beg);
+
   if (pFile.tellg() > pHeader.FileSize) {
     throw std::runtime_error("BCSTM: Seeked Out of range!");
   }