BLD: Fixed pointer ambiguity in 'tokenizer.c'

closes #13865
closes #13863

Author: ivannz

pandas/src/parser/tokenizer.c

@@ -1257,11 +1257,11 @@ int parser_trim_buffers(parser_t *self) {
             //  `make_stream_space`.
             if (self->stream != newptr) {
                 /* TRACE(("Moving word pointers\n")) */
-                self->pword_start = newptr + self->word_start;
+                self->pword_start = (char*) newptr + self->word_start;
 
                 for (i = 0; i < self->words_len; ++i)
                 {
-                    self->words[i] = newptr + self->word_starts[i];
+                    self->words[i] = (char*) newptr + self->word_starts[i];
                 }
             }