settings: Add fs_file_t type variable initializations

The commit adds initializations of fs_file_t variables in preparation
for fs_open function change that will require fs_file_t object, passed
to the function, to be initialized before first usage.

Signed-off-by: Dominik Ermel <[email protected]>

Author: de-nordic

subsys/settings/src/settings_file.c

@@ -123,6 +123,8 @@ static int settings_file_load_priv(struct settings_store *cs, line_load_cb cb,
 
 	lines = 0;
 
+	fs_file_t_init(&file);
+
 	rc = fs_open(&file, cf->cf_name, FS_O_CREATE | FS_O_RDWR);
 	if (rc != 0) {
 		return -EINVAL;
@@ -240,6 +242,9 @@ static int settings_file_save_and_compress(struct settings_file *cf,
 	size_t new_name_len;
 	size_t val1_off;
 
+	fs_file_t_init(&rf);
+	fs_file_t_init(&wf);
+
 	if (fs_open(&rf, cf->cf_name, FS_O_CREATE | FS_O_RDWR) != 0) {
 		return -ENOEXEC;
 	}
@@ -360,14 +365,16 @@ static int settings_file_save_priv(struct settings_store *cs, const char *name,
 {
 	struct settings_file *cf = (struct settings_file *)cs;
 	struct line_entry_ctx entry_ctx;
-	struct fs_file_t  file;
+	struct fs_file_t file;
 	int rc2;
 	int rc;
 
 	if (!name) {
 		return -EINVAL;
 	}
 
+	fs_file_t_init(&file);
+
 	if (cf->cf_maxlines && (cf->cf_lines + 1 >= cf->cf_maxlines)) {
 		/*
 		 * Compress before config file size exceeds