fixed typo in checking cp2k pattern match.

Author: robinzyb

dpdata/cp2k/output.py

@@ -83,6 +83,7 @@ def get_log_block_generator(self):
                 lines.append(line)
                 if any(p.match(line) for p in delimiter_patterns):
                     if delimiter_flag is True:
+                        yield_flag = True
                         yield lines
                         lines = []
                         delimiter_flag = False
@@ -108,6 +109,7 @@ def get_xyz_block_generator(self):
                     raise StopIteration("None of the xyz patterns are matched")
                 break
             if p3.match(line):
+                yield_flag = True
                 atom_num = int(p3.match(line).group(1))
                 lines = []
                 lines.append(line)