Fix a buffer size calculation in Lookup.

src/libespeak-ng/dictionary.c

 	if (flags[0] & FLAG_TEXTMODE) {
 		say_as = option_sayas;
 		option_sayas = 0; // don't speak replacement word as letter names
-		text[0] = 0;
-		strncpy0(&text[1], word1, sizeof(text));
-		flags0 = TranslateWord(tr, &text[1], NULL, NULL);
+		strncpy0(text, word1, sizeof(text));
+		flags0 = TranslateWord(tr, text, NULL, NULL);
 		strcpy(ph_out, word_phonemes);
 		option_sayas = say_as;
 	}