various comment / whitespace tweaks (libmsc, gprs, libcommon-cs)

cosmetic ws in common_cs_vty.c, osmo_msc.c

comment: tiny typo fix in gsm_04_08.c

In comments, drop some unbalanced braces, because simplistic C file harvesters
will break at a single opening brace even if it is in a comment. This is aimed
at the fsm-to-dot.py script in libosmocore/contrib.

Change-Id: I3c1fa53195a1e57d6fe0a6791c346d30ceff1251
diff --git a/openbsc/src/gprs/gtphub.c b/openbsc/src/gprs/gtphub.c
index 83e17db..a1aaed2 100644
--- a/openbsc/src/gprs/gtphub.c
+++ b/openbsc/src/gprs/gtphub.c
@@ -553,7 +553,7 @@
 	}
 
 #if 1
-	/* TODO if (<loglevel is debug>) { ...
+	/* TODO if (<loglevel is debug>)
 	   (waiting for a commit from jerlbeck) */
 	int i;