Change function "procura_simb" to correct warning

Correct warning of return incorrect pointer as pointer.

Signed-off-by: Gustavo Toshi Komura <gtk10@c3sl.ufpr.br>
Update syntatic to use new function "procura_simb"

Signed-off-by: Gustavo Toshi Komura <gtk10@c3sl.ufpr.br>
Execute make

Signed-off-by: Gustavo Toshi Komura <gtk10@c3sl.ufpr.br>