Update src/native/libs/System.Native/pal_io.c

Co-authored-by: Copilot <[email protected]>

Author: trungnt2910

src/native/libs/System.Native/pal_io.c

@@ -1838,6 +1838,7 @@ uint32_t SystemNative_GetFileSystemType(intptr_t fd)
         // Haiku names its own BFS filesystem "bfs", but on Linux and some other UNIXes
         // it is called "befs" to avoid confusion with Boot File System.
         strncpy(info.fsh_name, "befs", sizeof(info.fsh_name) - 1);
+        info.fsh_name[sizeof(info.fsh_name) - 1] = '\0';
     }
 
     return MapFileSystemNameToEnum(info.fsh_name);