Trivial changes: whitespace and modes.

Remote whitespace at the ends of lines.
Remove blank lines from the ends of files.
Change modes on source files so that they
are not executable.

Signed-off-by: Dan Cross <cross@gajendra.net>

src/libplumb/fid.c

@@ -161,4 +161,3 @@ plumbrecvfid(CFid *fid)
 	free(buf);
 	return m;
 }
-

src/libplumb/mesg.c

@@ -338,4 +338,3 @@ plumbunpack(char *buf, int n)
 {
 	return plumbunpackpartial(buf, n, nil);
 }
-