1d76bf881d3e18580739e44698a0d1a499c2f9f1
hiram
  Fri Oct 2 10:31:39 2015 -0700
fixup gcc warnings for -Wunused-but-set-variable refs #16121

diff --git src/lib/udc.c src/lib/udc.c
index 9a498cd..148b0d4 100644
--- src/lib/udc.c
+++ src/lib/udc.c
@@ -596,43 +596,41 @@
 /* Read signature and decide if byte-swapping is needed. */
 // TODO: maybe buffer the I/O for performance?  Don't read past header - 
 // fd offset needs to point to first data block when we return.
 bits32 magic;
 boolean isSwapped = FALSE;
 mustReadOneFd(fd, magic);
 if (magic != udcBitmapSig)
     {
     magic = byteSwap32(magic);
     isSwapped = TRUE;
     if (magic != udcBitmapSig)
        errAbort("%s is not a udcBitmap file", fileName);
     }
 
 /* Allocate bitmap object, fill it in, and return it. */
-bits32 reserved32;
-bits64 reserved64;
 struct udcBitmap *bits;
 AllocVar(bits);
 bits->blockSize = fdReadBits32(fd, isSwapped);
 bits->remoteUpdate = fdReadBits64(fd, isSwapped);
 bits->fileSize = fdReadBits64(fd, isSwapped);
 bits->version = fdReadBits32(fd, isSwapped);
-reserved32 = fdReadBits32(fd, isSwapped);
-reserved64 = fdReadBits64(fd, isSwapped);
-reserved64 = fdReadBits64(fd, isSwapped);
-reserved64 = fdReadBits64(fd, isSwapped);
-reserved64 = fdReadBits64(fd, isSwapped);
+fdReadBits32(fd, isSwapped); // ignore result
+fdReadBits64(fd, isSwapped); // ignore result
+fdReadBits64(fd, isSwapped); // ignore result
+fdReadBits64(fd, isSwapped); // ignore result
+fdReadBits64(fd, isSwapped); // ignore result
 bits->localUpdate = status.st_mtime;
 bits->localAccess = status.st_atime;
 bits->isSwapped = isSwapped;
 bits->fd = fd;
 
 return bits;
 }
 
 static void udcBitmapClose(struct udcBitmap **pBits)
 /* Free up resources associated with udcBitmap. */
 {
 struct udcBitmap *bits = *pBits;
 if (bits != NULL)
     {
     mustCloseFd(&(bits->fd));