bindings: add a free_datastream handler function to avoid memleak on FFI

bindings/c/c_ffi.cpp

@@ -8,6 +8,8 @@ PCSX2Ipc *pcsx2ipc_new() { return new PCSX2Ipc(); }
 
 void pcsx2ipc_initialize_batch(PCSX2Ipc *v) { return v->InitializeBatch(); }
 
+void pcsx2ipc_free_datastream(char *data) { delete[] data; }
+
 int pcsx2ipc_finalize_batch(PCSX2Ipc *v) {
     auto p_batch = new PCSX2Ipc::BatchCommand;
     auto batch = v->FinalizeBatch();

bindings/c/c_ffi.h

@@ -34,6 +34,13 @@ EXPORT_LIB PCSX2Ipc *pcsx2ipc_new();
  */
 EXPORT_LIB void pcsx2ipc_initialize_batch(PCSX2Ipc *v);
 
+/**
+ * This function frees datastream whose ownership was passed down to you. @n
+ * This is just a fancy wrapper around delete[] that is easier to use through
+ * FFI.
+ */
+EXPORT_LIB void pcsx2ipc_free_datastream(char *data);
+
 /**
  * In contrast to the C++ library this returns a handle to a struct. @n
  * This requires you to free handles by yourself, see
@@ -70,7 +77,7 @@ EXPORT_LIB char *pcsx2ipc_version(PCSX2Ipc *v, bool batch);
 /**
  * @see PCSX2Ipc::Status
  */
-EXPORT_LIB PCSX2Ipc::EmuStatus pcsx2ipc_status(PCSX2Ipc* v, bool batch);
+EXPORT_LIB PCSX2Ipc::EmuStatus pcsx2ipc_status(PCSX2Ipc *v, bool batch);
 
 /**
  * @see PCSX2Ipc::GetGameTitle
@@ -90,7 +97,7 @@ EXPORT_LIB char *pcsx2ipc_getgameuuid(PCSX2Ipc *v, bool batch);
 /**
  * @see PCSX2Ipc::GetGameVersion
  */
-EXPORT_LIB char* pcsx2ipc_getgameversion(PCSX2Ipc* v, bool batch);
+EXPORT_LIB char *pcsx2ipc_getgameversion(PCSX2Ipc *v, bool batch);
 
 /**
  * @see PCSX2Ipc::SaveState