git: use ^=1 to toggle between 0 and 1

If it is known that an int is either 1 or 0,
doing an exclusive or to switch instead of a
modulus makes more sense and is more efficient.

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

Author: Seija Kijin

diff.c

@@ -1231,7 +1231,7 @@ static void mark_color_as_moved(struct diff_options *o,
 							    &pmb_nr);
 
 			if (contiguous && pmb_nr && moved_symbol == l->s)
-				flipped_block = (flipped_block + 1) % 2;
+				flipped_block ^= 1;
 			else
 				flipped_block = 0;
 

t/helper/test-path-utils.c

@@ -188,7 +188,7 @@ static int check_dotfile(const char *x, const char **argv,
 	int res = 0, expect = 1;
 	for (; *argv; argv++) {
 		if (!strcmp("--not", *argv))
-			expect = !expect;
+			expect ^= 1;
 		else if (expect != (is_hfs(*argv) || is_ntfs(*argv)))
 			res = error("'%s' is %s.git%s", *argv,
 				    expect ? "not " : "", x);