bugfix that caused residues to have a wrong output name

src/fileIO.c

@@ -389,6 +389,7 @@ void write_candidate(struct residue** t_candid, int sizeCand, FILE* output_strea
                             k++;
                         }
                     }
+                    buf[k] = '\0';
 
                     /* Now, getting the atom name */
                     len = strlen(t_candid[i]->atomType[j]);