Add flac patch to workaround compiler bug causing build error

Signed-off-by: falkTX <falktx@falktx.com>

sources/libs/flac-static/debian/changelog

@@ -1,4 +1,4 @@
-flac-static (6:1.5.0-1kxstudio1) focal; urgency=medium
+flac-static (6:1.5.0-1kxstudio2) focal; urgency=medium
 
   * Update
 

sources/libs/flac-static/debian/patches/9003-workaround-compiler-bug.patch

@@ -0,0 +1,13 @@
+--- flac-static-1.5.0.orig/src/libFLAC/window.c
++++ flac-static-1.5.0/src/libFLAC/window.c
+@@ -178,6 +178,10 @@ void FLAC__window_rectangle(FLAC__real *
+ 		window[n] = 1.0f;
+ }
+ 
++#ifdef __arm__
++/* workaround compiler bug */
++__attribute__((optimize(1)))
++#endif
+ void FLAC__window_triangle(FLAC__real *window, const FLAC__int32 L)
+ {
+ 	FLAC__int32 n;

sources/libs/flac-static/debian/patches/series

@@ -1,3 +1,4 @@
 0001-remove-build-path-from-generated-FLAC.tag-file.patch
 9001-fix-libs.patch
 9002-hidden-flac-api.patch
+9003-workaround-compiler-bug.patch