Evas textblock: strcpy->strncpy (although the buffer is always big enough).

Many tools will complain about the use of strcpy, and it's not that hard to use
strncpy anyway.

CID1039581.

src/lib/evas/canvas/evas_object_textblock.c

@@ -6137,7 +6137,7 @@ _escaped_char_get(const char *s, const char *s_end)
           return NULL;
 
         utf8_char = eina_unicode_unicode_to_utf8(uchar, NULL);
-        strcpy(utf8_escape, utf8_char);
+        strncpy(utf8_escape, utf8_char, sizeof(utf8_escape));
         free(utf8_char);
 
         return utf8_escape;