gdbserver/linux-low.cc: Fix a typo in ternary operator

Signed-off-by: Khem Raj <raj.khem@gmail.com>
diff --git a/gdbserver/linux-low.cc b/gdbserver/linux-low.cc
index 4328fed..dec1944 100644
--- a/gdbserver/linux-low.cc
+++ b/gdbserver/linux-low.cc
@@ -5390,7 +5390,7 @@
       if (lseek (fd, memaddr, SEEK_SET) != -1)
 	bytes = (readbuf != nullptr
 		 ? read (fd, readbuf, len)
-		 ? write (fd, writebuf, len));
+		 : write (fd, writebuf, len));
 #endif
 
       if (bytes < 0)