llext: test-simple: replace ARRAY_SIZE() with sizeof()

When identifying the size of an extension image we simply need its
size in bytes, not the number of array elements, that contain it.
Both happen to return the same value, because we use arrays of bytes,
but using sizeof() is clearer.

Signed-off-by: Guennadi Liakhovetski <[email protected]>

Author: lyakh

tests/subsys/llext/simple/src/test_llext_simple.c

@@ -241,7 +241,7 @@ void load_call_unload(const struct llext_test *test_case)
 		const struct llext_test test_case = {		\
 			.name = STRINGIFY(_name),		\
 			.buf = _name ## _ext,			\
-			.buf_len = ARRAY_SIZE(_name ## _ext),	\
+			.buf_len = sizeof(_name ## _ext),	\
 			extra_args                              \
 		};						\
 		load_call_unload(&test_case);			\
@@ -328,7 +328,7 @@ static LLEXT_CONST uint8_t pre_located_ext[] ELF_ALIGN = {
 ZTEST(llext, test_pre_located)
 {
 	struct llext_buf_loader buf_loader =
-		LLEXT_BUF_LOADER(pre_located_ext, ARRAY_SIZE(pre_located_ext));
+		LLEXT_BUF_LOADER(pre_located_ext, sizeof(pre_located_ext));
 	struct llext_loader *loader = &buf_loader.loader;
 	struct llext_load_param ldr_parm = LLEXT_LOAD_PARAM_DEFAULT;
 	struct llext *ext = NULL;
@@ -364,7 +364,7 @@ ZTEST(llext, test_find_section)
 	ssize_t section_ofs;
 
 	struct llext_buf_loader buf_loader =
-		LLEXT_BUF_LOADER(find_section_ext, ARRAY_SIZE(find_section_ext));
+		LLEXT_BUF_LOADER(find_section_ext, sizeof(find_section_ext));
 	struct llext_loader *loader = &buf_loader.loader;
 	struct llext_load_param ldr_parm = LLEXT_LOAD_PARAM_DEFAULT;
 	struct llext *ext = NULL;