fix some unchecked sign conversions in the example code

examples/client.c

@@ -34,7 +34,7 @@ int main(int argc, char *argv[]) {
         //cleanup array
         UA_Array_delete(endpointArray,endpointArraySize, &UA_TYPES[UA_TYPES_ENDPOINTDESCRIPTION]);
         UA_Client_delete(client);
-        return retval;
+        return (int)retval;
     }
 
     printf("%i endpoints found\n", (int)endpointArraySize);
@@ -50,7 +50,7 @@ int main(int argc, char *argv[]) {
 
     if(retval != UA_STATUSCODE_GOOD) {
         UA_Client_delete(client);
-        return retval;
+        return (int)retval;
     }
     // Browse some objects
     printf("Browsing nodes in objects folder:\n");

examples/client_firstSteps.c

@@ -18,7 +18,7 @@ int main(void) {
                                              "opc.tcp://localhost:16664");
     if(retval != UA_STATUSCODE_GOOD) {
         UA_Client_delete(client);
-        return retval;
+        return (int)retval;
     }
 
     //variables to store data

examples/server_datasource.c

@@ -20,7 +20,7 @@ UA_Logger logger = Logger_Stdout;
 
 static void stopHandler(int sign) {
     UA_LOG_INFO(logger, UA_LOGCATEGORY_SERVER, "received ctrl-c");
-    running = 0;
+    running = false;
 }
 
 static UA_StatusCode
@@ -79,5 +79,5 @@ int main(int argc, char** argv) {
     UA_Server_delete(server);
     nl.deleteMembers(&nl);
 
-    return retval;
+    return (int)retval;
 }

examples/server_firstSteps.c

@@ -32,5 +32,5 @@ int main(void) {
     UA_StatusCode retval = UA_Server_run(server, &running);
     UA_Server_delete(server);
     nl.deleteMembers(&nl);
-    return retval;
+    return (int)retval;
 }

examples/server_nodeset.c

@@ -46,5 +46,5 @@ int main(int argc, char** argv) {
     /* ctrl-c received -> clean up */
     UA_Server_delete(server);
     nl.deleteMembers(&nl);
-    return retval;
+    return (int)retval;
 }

examples/server_readspeed.c

@@ -104,5 +104,5 @@ int main(int argc, char** argv) {
     UA_Server_delete(server);
     nl.deleteMembers(&nl);
 
-    return retval;
+    return (int)retval;
 }

examples/server_repeated_job.c

@@ -44,5 +44,5 @@ int main(int argc, char** argv) {
     UA_StatusCode retval = UA_Server_run(server, &running);
     UA_Server_delete(server);
     nl.deleteMembers(&nl);
-    return retval;
+    return (int)retval;
 }

examples/server_variable.c

@@ -62,5 +62,5 @@ int main(int argc, char** argv) {
     UA_Server_delete(server);
     nl.deleteMembers(&nl);
 
-    return retval;
+    return (int)retval;
 }