Removing trailing whitespace.
diff --git a/builds/unix/configure.in b/builds/unix/configure.in
index d6488e1..33b2f08 100644
--- a/builds/unix/configure.in
+++ b/builds/unix/configure.in
@@ -79,7 +79,7 @@
 
 AM_PROG_LIBTOOL
 
-dnl create the Unix-specific sub-Makefiles `builds/unix/unix-def.mk' 
+dnl create the Unix-specific sub-Makefiles `builds/unix/unix-def.mk'
 dnl and 'builds/unix/unix-cc.mk' that will be used by the build system
 dnl
 AC_OUTPUT(unix-cc.mk:unix-cc.in unix-def.mk:unix-def.in)