dataman: add missing include of px4_defines header

src/modules/dataman/dataman.c

@@ -41,6 +41,7 @@
  */
 
 #include <px4_config.h>
+#include <px4_defines.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <fcntl.h>
@@ -665,10 +666,10 @@ task_main(int argc, char *argv[])
 			warnx("Incompatible data manager file %s, resetting it", k_data_manager_device_path);
 			close(g_task_fd);
 			unlink(k_data_manager_device_path);
-		}
-		else
+		} else {
 			close(g_task_fd);
 		}
+	}
 
 	/* Open or create the data manager file */
 	g_task_fd = open(k_data_manager_device_path, O_RDWR | O_CREAT | O_BINARY