[PATCH v2 1/3] src/*: Fix an error for the loop initialization declaration

[Yang Xu <xuyang2018.jy@xxxxxxxxxxx>]

When compile them on old gcc, get the following error
mount-idmapped.c: In function 'parse_map':
mount-idmapped.c:154:2: error: 'for' loop initial declarations are only allowed in C99 mode
  for (int i = 0; i < 2; i++) {

Fix them by declaring them at the beginning instead of in loop.

Signed-off-by: Yang Xu <xuyang2018.jy@xxxxxxxxxxx>
---
 src/detached_mounts_propagation.c    | 4 ++--
 src/idmapped-mounts/mount-idmapped.c | 7 ++++---
 2 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/src/detached_mounts_propagation.c b/src/detached_mounts_propagation.c
index 99b66308..d4bc87f9 100644
--- a/src/detached_mounts_propagation.c
+++ b/src/detached_mounts_propagation.c
@@ -96,7 +96,7 @@ static const struct option longopts[] = {
 int main(int argc, char *argv[])
 {
 	int exit_code = EXIT_SUCCESS, index = 0;
-	int dfd, fd_tree, new_argc, ret;
+	int dfd, fd_tree, new_argc, ret, i;
 	char *base_dir;
 	char *const *new_argv;
 	char target[PATH_MAX];
@@ -147,7 +147,7 @@ int main(int argc, char *argv[])
 	 * Having a mount table with 10000 mounts is already quite excessive
 	 * and shoult account even for weird test systems.
 	 */
-	for (size_t i = 0; i < 10000; i++) {
+	for (i = 0; i < 10000; i++) {
 		fd_tree = sys_open_tree(dfd, "detached-move-mount",
 					OPEN_TREE_CLONE |
 					OPEN_TREE_CLOEXEC |
diff --git a/src/idmapped-mounts/mount-idmapped.c b/src/idmapped-mounts/mount-idmapped.c
index 5f5ba5d2..b3e9e27b 100644
--- a/src/idmapped-mounts/mount-idmapped.c
+++ b/src/idmapped-mounts/mount-idmapped.c
@@ -137,7 +137,7 @@ static int add_map_entry(__u32 id_host,
 static int parse_map(char *map)
 {
 	char types[2] = {'u', 'g'};
-	int ret;
+	int ret, i;
 	__u32 id_host, id_ns, range;
 	char which;
 
@@ -151,7 +151,7 @@ static int parse_map(char *map)
 	if (which != 'b' && which != 'u' && which != 'g')
 		return -1;
 
-	for (int i = 0; i < 2; i++) {
+	for (i = 0; i < 2; i++) {
 		idmap_type_t map_type;
 
 		if (which != types[i] && which != 'b')
@@ -230,8 +230,9 @@ static int map_ids_from_idmap(struct list *idmap, pid_t pid)
 	int fill, left;
 	char mapbuf[4096] = {};
 	bool had_entry = false;
+	idmap_type_t map_type, u_or_g;
 
-	for (idmap_type_t map_type = ID_TYPE_UID, u_or_g = 'u';
+	for (map_type = ID_TYPE_UID, u_or_g = 'u';
 	     map_type <= ID_TYPE_GID; map_type++, u_or_g = 'g') {
 		char *pos = mapbuf;
 		int ret;
-- 
2.23.0