Commit b47edc4

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CJSON_SetValuestring: add test for overlapping string

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Original file line number	Diff line number	Diff line change
`@@ -471,6 +471,19 @@ static void cjson_functions_should_not_crash_with_null_pointers(void)`
`471`	`471`	`cJSON_Delete(item);`
`472`	`472`	`}`
`473`	`473`
	`474`	`+static void cjson_set_valuestring_should_return_null_if_strings_overlap(void)`
	`475`	`+{`
	`476`	`+ cJSON obj, obj_dup;`
	`477`	`+ char* str;`
	`478`	`+`
	`479`	`+ obj = cJSON_Parse("\"fooz\"");`
	`480`	`+ obj_dup = cJSON_Duplicate(obj, 1);`
	`481`	`+`
	`482`	`+ str = cJSON_SetValuestring(obj_dup, "beeez");`
	`483`	`+ cJSON_SetValuestring(obj_dup, str);`
	`484`	`+ cJSON_SetValuestring(obj_dup, ++str);`
	`485`	`+}`
	`486`	`+`
`474`	`487`	`static void CJSON_CDECL failing_realloc(void pointer, size_t size)`
`475`	`488`	`{`
`476`	`489`	`(void)size;`
`@@ -765,6 +778,7 @@ int CJSON_CDECL main(void)`
`765`	`778`	`RUN_TEST(cjson_replace_item_via_pointer_should_replace_items);`
`766`	`779`	`RUN_TEST(cjson_replace_item_in_object_should_preserve_name);`
`767`	`780`	`RUN_TEST(cjson_functions_should_not_crash_with_null_pointers);`
	`781`	`+ RUN_TEST(cjson_set_valuestring_should_return_null_if_strings_overlap);`
`768`	`782`	`RUN_TEST(ensure_should_fail_on_failed_realloc);`
`769`	`783`	`RUN_TEST(skip_utf8_bom_should_skip_bom);`
`770`	`784`	`RUN_TEST(skip_utf8_bom_should_not_skip_bom_if_not_at_beginning);`

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