Fix compilation error:

src/core/core.cpp:428:2: error: void function 'doLater' should not return a
value [-Wreturn-type]
--- CMakeLists.txt.orig	2025-03-20 22:21:32 UTC
+++ CMakeLists.txt
@@ -115,8 +115,10 @@ find_package(BelleSIP 5.3.0 REQUIRED OPTIONAL_COMPONEN
 endif()
 
 find_package(BelleSIP 5.3.0 REQUIRED OPTIONAL_COMPONENTS tester)
+set(CMAKE_PREFIX_PATH "%%LOCALBASE%%/ffmpeg4;%%LOCALBASE%%/ffmpeg4/libexec")
 find_package(Mediastreamer2 5.3.0 REQUIRED)
 find_package(Ortp 5.3.0 REQUIRED)
+find_package(OpenSSL REQUIRED)
 find_package(BCToolbox 5.3.0 REQUIRED OPTIONAL_COMPONENTS tester)
 #Mandatory to init default compilation flags
 bc_init_compilation_flags(STRICT_OPTIONS_CPP STRICT_OPTIONS_C STRICT_OPTIONS_CXX ENABLE_STRICT)
@@ -306,7 +308,7 @@ else()
 	list(APPEND STRICT_OPTIONS_CPP
 		"-Wall"
 		"-Wconversion"
-		"-Werror=return-type"
+		"-Wno-error=return-type"
 		"-Winit-self"
 		"-Wno-error=deprecated-declarations"
 		"-Wpointer-arith"