pathsec: make check for PATHSPEC_LITERAL more readable

This check is designed to die if global_magic
has the PATHSPEC_LITERAL and any other setting.

This can be written is a much more obvious way:
if global_magic has PATHSPEC_LITERAL, it can only
BE PATHSPEC_LITERAL, and if it isn't then there are
other settings.

Signed-off-by: Seija Kijin <[email protected]>

Author: Seija Kijin

pathspec.c

@@ -313,7 +313,7 @@ static int get_global_magic(int element_magic)
 		global_magic |= PATHSPEC_ICASE;
 
 	if ((global_magic & PATHSPEC_LITERAL) &&
-	    (global_magic & ~PATHSPEC_LITERAL))
+	    (global_magic != PATHSPEC_LITERAL))
 		die(_("global 'literal' pathspec setting is incompatible "
 		      "with all other global pathspec settings"));