Hi, i find a memory leaked in mp4audioclip. I saved all my test files [here](https://github.com/WorldExecute/files/tree/main/Bento4)

Here are the details.

For **mp4audioclip** with [test input](https://github.com/WorldExecute/files/blob/main/Bento4/mp4audioclip/memory%20leaked/test_1):
```
ERROR: cannot parse input (0)

=================================================================
==8852==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 48 byte(s) in 1 object(s) allocated from:
    #0 0x4c44bd in operator new(unsigned long) (/Bento4/check/mp4audioclip+0x4c44bd)
    #1 0x4eb29f in AP4_StdcFileByteStream::Create(AP4_FileByteStream*, char const*, AP4_FileByteStream::Mode, AP4_ByteStream*&) (/Bento4/check/mp4audioclip+0x4eb29f)

SUMMARY: AddressSanitizer: 48 byte(s) leaked in 1 allocation(s).
```


You can use the following setp to reproduce all the problems.
```
git clone https://github.com/axiomatic-systems/Bento4
cd Bento4/
mkdir check && cd check
cmake ../ -DCMAKE_C_COMPILER=clang  -DCMAKE_CXX_COMPILER=clang++ -DCMAKE_C_FLAGS="-fsanitize=address" -DCMAKE_CXX_FLAGS="-fsanitize=address" -DCMAKE_BUILD_TYPE=Release
make -j
git clone https://github.com/WorldExecute/files.git
./mp4audioclip ./files/Bento4/mp4audioclip/memory\ leaked/test_1 /dev/null
```
Thanks for your time!
memory leaked
This is a GitHub Issue
repo:Bento4
owner:axiomatic-systems
Title : memory leaked
Issue date:

--- start body ---
Hi, i find a memory leaked in mp4audioclip. I saved all my test files [here](https://github.com/WorldExecute/files/tree/main/Bento4)

Here are the details.

For **mp4audioclip** with [test input](https://github.com/WorldExecute/files/blob/main/Bento4/mp4audioclip/memory%20leaked/test_1):
```
ERROR: cannot parse input (0)

=================================================================
==8852==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 48 byte(s) in 1 object(s) allocated from:
    #0 0x4c44bd in operator new(unsigned long) (/Bento4/check/mp4audioclip+0x4c44bd)
    #1 0x4eb29f in AP4_StdcFileByteStream::Create(AP4_FileByteStream*, char const*, AP4_FileByteStream::Mode, AP4_ByteStream*&) (/Bento4/check/mp4audioclip+0x4eb29f)

SUMMARY: AddressSanitizer: 48 byte(s) leaked in 1 allocation(s).
```


You can use the following setp to reproduce all the problems.
```
git clone https://github.com/axiomatic-systems/Bento4
cd Bento4/
mkdir check && cd check
cmake ../ -DCMAKE_C_COMPILER=clang  -DCMAKE_CXX_COMPILER=clang++ -DCMAKE_C_FLAGS="-fsanitize=address" -DCMAKE_CXX_FLAGS="-fsanitize=address" -DCMAKE_BUILD_TYPE=Release
make -j
git clone https://github.com/WorldExecute/files.git
./mp4audioclip ./files/Bento4/mp4audioclip/memory\ leaked/test_1 /dev/null
```
Thanks for your time!
--- end body ---
