tweaks: change 'return ++var;' to 'return var + 1;'

This avoids an unused and misleading assignment that might make
someone think the incremented variable will be used again.

Signed-off-by: Hussam al-Homsi <sawuare@gmail.com>

src/text.c

@@ -186,7 +186,7 @@ size_t length_of_white(const char *text)
 
 	while (TRUE) {
 		if (*text == '\t')
-			return ++white_count;
+			return white_count + 1;
 
 		if (*text != ' ')
 			return white_count;

src/utils.c

@@ -61,7 +61,7 @@ const char *tail(const char *path)
 	if (slash == NULL)
 		return path;
 	else
-		return ++slash;
+		return slash + 1;
 }
 
 /* Return a copy of the two given strings, welded together. */