also compile x265 encoder parts on amalgamation test

Author: zoff99

.github/workflows/amalgamation_test.yml

@@ -54,7 +54,7 @@ jobs:
       - name: compile test with ToxAV
         run: |
           cd amalgamation
-          gcc -O3 -fPIC -g -fsanitize=address -fno-omit-frame-pointer amalgamation_test.c -DTEST_WITH_TOXAV $(pkg-config --cflags --libs libsodium opus vpx libavcodec libavutil x264 x265) -pthread -o amalgamation_test_av
+          gcc -O3 -fPIC -g -fsanitize=address -fno-omit-frame-pointer amalgamation_test.c -DHAVE_H265_ENCODER -DTEST_WITH_TOXAV $(pkg-config --cflags --libs libsodium opus vpx libavcodec libavutil x264 x265) -pthread -o amalgamation_test_av
 
       - name: check binary with ToxAV
         run: |

amalgamation/amalgamation_test.c

@@ -2,7 +2,7 @@
  * compile a simple tox program with toxcore amalgamation (on a linux system):
  *
  * with ToxAV:
- * gcc -O3 -fPIC amalgamation_test.c -DTEST_WITH_TOXAV $(pkg-config --cflags --libs libsodium opus vpx libavcodec libavutil x264) -pthread -o amalgamation_test_av
+ * gcc -O3 -fPIC amalgamation_test.c -DHAVE_H265_ENCODER -DTEST_WITH_TOXAV $(pkg-config --cflags --libs libsodium opus vpx libavcodec libavutil x264 x265) -pthread -o amalgamation_test_av
  *
  * without ToxAV:
  * gcc -O3 -fPIC amalgamation_test.c $(pkg-config --cflags --libs libsodium) -pthread -o amalgamation_test