Fix minor issue on self.col and self.data

Author: QinbinLi

python/thundersvm/thundersvm.py

@@ -442,8 +442,8 @@ def load_from_file(self, path):
         sv_indices = (c_int * self.n_sv)()
         thundersvm.get_sv(csr_row, csr_col, csr_data, data_size, sv_indices, c_void_p(self.model))
         self.row = np.frombuffer(csr_row, dtype=np.int32)
-        self.col = np.frombuffer(csr_col, dtype=np.int32)
-        self.data = np.frombuffer(csr_data, dtype=np.float32)
+        self.col = np.frombuffer(csr_col, dtype=np.int32)[:data_size[0]]
+        self.data = np.frombuffer(csr_data, dtype=np.float32)[:data_size[0]]
         self.support_vectors_ = sp.csr_matrix((self.data, self.col, self.row))
         # if self._sparse == False:
         #     self.support_vectors_ = self.support_vectors_.toarray(order = 'C')