OS_ModuleLoad_Impl function header does not match definition

[matzipan]

Describe the bug
When OS_INCLUDE_MODULE_LOADER is not defined, the function header does not
match the definition:

[ 98%] Building C object examples/rtems-cfs-hello-world/osal/CMakeFiles/osal.dir/src/os/rtems/osloader.obj
/home/andrei/Workspace/cFS/osal/src/os/rtems/osloader.c:320:7: error: conflicting types for 'OS_ModuleLoad_Impl'
 int32 OS_ModuleLoad_Impl ( uint32 module_id, char *translated_path )
       ^~~~~~~~~~~~~~~~~~
In file included from /home/andrei/Workspace/cFS/osal/src/os/rtems/os-rtems.h:39:0,
                 from /home/andrei/Workspace/on-board-software/vendor/cFS/osal/src/os/rtems/osloader.c:26:
/home/andrei/Workspace/cFS/osal/src/os/shared/os-impl.h:1230:7: note: previous declaration of 'OS_ModuleLoad_Impl' was here
 int32 OS_ModuleLoad_Impl ( uint32 module_id, const char *translated_path );

This issue was introduced in PR #21 .

To Reproduce
Build with OS_INCLUDE_MODULE_LOADER not defined.

Expected behavior
Build succeeds.