Revert "fix input text matching"

This reverts commit 09d0a36e03.

Using strncmp with the length of the user input turns it into a prefix
match rather than an exact match as it's supposed to be.

dmenu.c

@@ -228,7 +228,7 @@ match(void)
 	len = tokc ? strlen(tokv[0]) : 0;
 
 	matches = lprefix = lsubstr = matchend = prefixend = substrend = NULL;
-	textsize = strlen(text);
+	textsize = strlen(text) + 1;
 	for (item = items; item && item->text; item++) {
 		for (i = 0; i < tokc; i++)
 			if (!fstrstr(item->text, tokv[i]))