Address Sanitizer not showing full stack trace

[rvanlaar]

In Scummvm this commit [1] solved a memory leak that occurred because the return variable of GetPreferredLocales [1]
should be freed.

The relevant output from our code with ASAN enabled:

WARNING: Score::startLoop(): exiting due to debug few frames only!

=================================================================
==3621583==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 76 byte(s) in 2 object(s) allocated from:
    #0 0x7f8272a6fa57 in __interceptor_calloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:154
    #1 0x7f827287d4a5 in SDL_calloc_REAL /home/rvanlaar/sdl-memoryleak/SDL/src/stdlib/SDL_malloc.c:5404

SUMMARY: AddressSanitizer: 76 byte(s) leaked in 2 allocation(s).

The relevant output from Valgrind:

==60735== 38 bytes in 1 blocks are definitely lost in loss record 112 of 282
==60735==    at 0x484DA83: calloc (in /usr/libexec/valgrind/vgpreload_memcheck-amd64-linux.so)
==60735==    by 0x491D2A5: SDL_calloc_REAL (SDL_malloc.c:5311)
==60735==    by 0x4991C53: build_locales_from_csv_string (SDL_locale.c:50)
==60735==    by 0x4991C53: SDL_GetPreferredLocales_REAL (SDL_locale.c:100)
==60735==    by 0x58C530: OSystem_SDL::getSystemLanguage() const (sdl.cpp:661)
==60735==    by 0xC4246B: Common::TranslationManager::setLanguage(Common::String const&) (translation.cpp:89)
==60735==    by 0x7BFC2D: GUI::GuiManager::GuiManager() (gui-manager.cpp:82)
==60735==    by 0x79D1F5: Common::Singleton<GUI::GuiManager>::makeInstance() (singleton.h:60)
==60735==    by 0x79CC7E: Common::Singleton<GUI::GuiManager>::instance() (singleton.h:83)
==60735==    by 0x7BD44F: GUI::Dialog::Dialog(int, int, int, int, bool) (dialog.cpp:49)
==60735==    by 0x7B97F1: GUI::ConsoleDialog::ConsoleDialog(float, float) (console.cpp:57)
==60735==    by 0x7B3A31: GUI::Debugger::Debugger() (debugger.cpp:57)
==60735==    by 0x5BB60F: Director::Debugger::Debugger() (debugger.cpp:46)
==60735== 

My request if for ASAN to show more information in the case of this memory leak.

[1] scummvm/scummvm@ca23e7f
[2] https://wiki.libsdl.org/SDL2/SDL_GetPreferredLocales