package/sox: remove EOL whitespace

Fixes https://gitlab.com/buildroot.org/buildroot/-/jobs/1010083301

Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
(cherry picked from commit c7eefe19cc0499ec3b7404dc378029d20df65c41)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/sox/sox.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-SOX_VERSION = 7524160b29a476f7e87bc14fddf12d349f9a3c5e 
+SOX_VERSION = 7524160b29a476f7e87bc14fddf12d349f9a3c5e
 SOX_SITE = git://git.code.sf.net/p/sox/code
 SOX_SITE_METHOD = git
 SOX_DEPENDENCIES = host-autoconf-archive host-pkgconf