package/protozero: fix double space in Config.in comment

Signed-off-by: Peter Seiderer <ps.report@gmx.net>
Reviewed-by: Maxim Kochetkov <fido_max@inbox.ru>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 0472287484e5914f7437cfd9f05524ab38b810fe)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/protozero/Config.in

@@ -16,5 +16,5 @@ config BR2_PACKAGE_PROTOZERO
 
 	  https://github.com/mapbox/protozero
 
-comment "protozero needs a toolchain w/ C++,  gcc >= 4.7"
+comment "protozero needs a toolchain w/ C++, gcc >= 4.7"
 	depends on !BR2_INSTALL_LIBSTDCPP || !BR2_TOOLCHAIN_GCC_AT_LEAST_4_7