VFS: fixing symbol clash on mc_write() at non-vfs build

src/vfsdummy.h

@@ -16,7 +16,6 @@
 #define O_LINEAR 0
 
 #define mc_close close
-#define mc_write write
 #define mc_lseek lseek
 #define mc_opendir opendir
 #define mc_readdir readdir

vfs/vfs.h

@@ -19,6 +19,7 @@ void vfs_shut (void);
 int vfs_current_is_local (void);
 int vfs_file_is_local (const char *filename);
 ssize_t mc_read (int handle, void *buffer, int count);
+ssize_t mc_write (int handle, const void *buffer, int count);
 
 #else /* USE_VFS */
 
@@ -27,6 +28,7 @@ ssize_t mc_read (int handle, void *buffer, int count);
 #define vfs_current_is_local() (1)
 #define vfs_file_is_local(x) (1)
 #define mc_read read
+#define mc_write write
 
 #endif /* USE_VFS */
 
@@ -52,7 +54,6 @@ char *vfs_translate_url (const char *url);
 
 int mc_open (const char *filename, int flags, ...);
 int mc_close (int handle);
-ssize_t mc_write (int handle, const void *buffer, int count);
 off_t mc_lseek (int fd, off_t offset, int whence);
 int mc_chdir (const char *path);