Replace exit with return in zephyr examples

examples/zephyr/z_get.c

@@ -66,7 +66,7 @@ int main(int argc, char **argv) {
     z_owned_session_t s;
     if (z_open(&s, z_move(config), NULL) < 0) {
         printf("Unable to open session!\n");
-        exit(-1);
+        return -1;
     }
     printf("OK\n");
 
@@ -92,7 +92,7 @@ int main(int argc, char **argv) {
         z_view_keyexpr_from_str_unchecked(&ke, KEYEXPR);
         if (z_get(z_loan(s), z_loan(ke), "", z_move(callback), &opts) < 0) {
             printf("Unable to send query.\n");
-            exit(-1);
+            return -1;
         }
     }
 

examples/zephyr/z_pub.c

@@ -48,7 +48,7 @@ int main(int argc, char **argv) {
     z_owned_session_t s;
     if (z_open(&s, z_move(config), NULL) < 0) {
         printf("Unable to open session!\n");
-        exit(-1);
+        return -1;
     }
     printf("OK\n");
 
@@ -62,7 +62,7 @@ int main(int argc, char **argv) {
     z_owned_publisher_t pub;
     if (z_declare_publisher(z_loan(s), &pub, z_loan(ke), NULL) < 0) {
         printf("Unable to declare publisher for key expression!\n");
-        exit(-1);
+        return -1;
     }
     printf("OK\n");
 

examples/zephyr/z_pull.c

@@ -48,15 +48,15 @@ int main(int argc, char **argv) {
     z_owned_session_t s;
     if (z_open(&s, z_move(config), NULL) < 0) {
         printf("Unable to open session!\n");
-        exit(-1);
+        return -1;
     }
     printf("OK\n");
 
     // Start read and lease tasks for zenoh-pico
     if (zp_start_read_task(z_loan_mut(s), NULL) < 0 || zp_start_lease_task(z_loan_mut(s), NULL) < 0) {
         printf("Unable to start read and lease tasks\n");
         z_session_drop(z_session_move(&s));
-        exit(-1);
+        return -1;
     }
 
     printf("Declaring Subscriber on '%s'...\n", KEYEXPR);
@@ -68,7 +68,7 @@ int main(int argc, char **argv) {
     z_view_keyexpr_from_str(&ke, KEYEXPR);
     if (z_declare_subscriber(z_loan(s), &sub, z_loan(ke), z_move(closure), NULL) < 0) {
         printf("Unable to declare subscriber.\n");
-        exit(-1);
+        return -1;
     }
 
     printf("Pulling data every %zu ms... Ring size: %zd\n", INTERVAL, SIZE);

examples/zephyr/z_queryable.c

@@ -71,7 +71,7 @@ int main(int argc, char **argv) {
     z_owned_session_t s;
     if (z_open(&s, z_move(config), NULL) < 0) {
         printf("Unable to open session!\n");
-        exit(-1);
+        return -1;
     }
     printf("OK\n");
 
@@ -88,7 +88,7 @@ int main(int argc, char **argv) {
     z_view_keyexpr_from_str_unchecked(&ke, KEYEXPR);
     if (z_declare_queryable(z_loan(s), &qable, z_loan(ke), z_move(callback), NULL) < 0) {
         printf("Unable to declare queryable.\n");
-        exit(-1);
+        return -1;
     }
     printf("OK\n");
     printf("Zenoh setup finished!\n");

examples/zephyr/z_sub.c

@@ -55,7 +55,7 @@ int main(int argc, char **argv) {
     z_owned_session_t s;
     if (z_open(&s, z_move(config), NULL) < 0) {
         printf("Unable to open session!\n");
-        exit(-1);
+        return -1;
     }
     printf("OK\n");
 
@@ -71,7 +71,7 @@ int main(int argc, char **argv) {
     z_owned_subscriber_t sub;
     if (z_declare_subscriber(z_loan(s), &sub, z_loan(ke), z_move(callback), NULL) < 0) {
         printf("Unable to declare subscriber.\n");
-        exit(-1);
+        return -1;
     }
     printf("OK!\n");