configure: Pass CFLAGS_HEADERS through the right CFLAGS filter

The generic parameter names used for CFLAGS in configure must be filtered
for each compiler and replaced by the equivalent flag for that compiler.

configure

@@ -716,6 +716,10 @@ add_cflags(){
     append CFLAGS $($cflags_filter "$@")
 }
 
+add_cflags_headers(){
+    append CFLAGS_HEADERS $($cflags_filter "$@")
+}
+
 add_asflags(){
     append ASFLAGS $($asflags_filter "$@")
 }
@@ -4834,7 +4838,7 @@ check_disable_warning -Wno-pointer-sign
 
 check_disable_warning_headers(){
     warning_flag=-W${1#-Wno-}
-    test_cflags $warning_flag && append cflags_headers $1
+    test_cflags $warning_flag && add_cflags_headers $1
 }
 
 check_disable_warning_headers -Wno-deprecated-declarations
@@ -5298,7 +5302,7 @@ TARGET_EXEC=$target_exec $target_exec_args
 TARGET_PATH=$target_path
 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
 CFLAGS-avplay=$sdl_cflags
-CFLAGS_HEADERS=$cflags_headers
+CFLAGS_HEADERS=$CFLAGS_HEADERS
 ZLIB=$($ldflags_filter -lz)
 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
 EXTRALIBS=$extralibs