raylib: [raudio] Segfault when loading (relatively) large files as Wave.

• I tested it on latest raylib version from master branch.
• I checked there is no similar issue already reported.
• My code has no errors or misuse of raylib (I hope?).

Issue description

When loading multiple-minute .mp3 files as Wave’s and calling the GetWaveData(Wave) method the application segfaults with no further explanation, I understand that we’re supposed to use the Music type for longer files, but bear with me as I have a (not-so-)weird use case, and there are some things about this which lead me to believe that it should/could actually work:

• It seems to be related to virtual memory size, as when running the application with either lldb or enabling address sanitizer (both of which set the virtual memory size to obscene values) then the application works flawlessly.
• I’ve used a 3-minute (3.9MB) .mp3 file for my own testing. I’ve noticed that some of the audio metadata extracted by raylib seems to be different from what another audio tool (ocenaudio) says. Ocenaudio says the file is 16-bit, while raylib says it is 32-bit, ocenaudio reports 8008125 samples, while raylib reports 16017408 (which divided by two would be 8008704, so still a bit different). I have not actually ran the numbers to check which count is correct, but I think this might help explain the issue somehow.

If this is recognized as an actual bug, I would be willing to try and contribute a PR to fix the issue, given some basic guidance.

Environment

• macOS Catalina 10.15.5
• Intel HD Graphics 3000 512 MB
• OpenGL Version: 3.3 INTEL-10.4.14
• Using AppleClang 12.0.0.12000032
• Reproduced with both raylib from master and the pre-built 3.0.0 binaries.

Code Example

#include "raylib.h"

int main(int, char**) {
  InitWindow(400, 200, "unseen");
  InitAudioDevice();
  Wave bgm_wave = LoadWave("resources/bgm/tmnt.mp3");

  float* bgm_wave_data = GetWaveData(bgm_wave);

  // Main game loop
  while (!WindowShouldClose())
  {
    TraceLog(LOG_INFO, "Wave size: %u %f", bgm_wave.sampleCount, bgm_wave_data[10]);
    BeginDrawing();
    ClearBackground(GetColor(0x052c46ff));
    DrawText("I hope you will never see this.", 100, 100, 10, RAYWHITE);
    EndDrawing();
  }

  UnloadWave(bgm_wave);

  CloseWindow();
  CloseAudioDevice();

  return 0;
}

PS: in the 3.0.0 release the Apple crash reporter could track the error down to https://github.com/raysan5/raylib/blob/3.0.0/src/raudio.c#L1024 which on master seems to be https://github.com/raysan5/raylib/blob/master/src/raudio.c#L1091