Segfault in version 1.0.1, read_parquet after creating a clickhouse odbc connection
We started getting segfaults in upgraded versions of pandas and tracked it down to an interaction with making odbc connections. The specific odbc driver is for Clickhouse built in Dec19 from:

```
https://github.com/ClickHouse/clickhouse-odbc
commit 08b252b93fc771fab607fb973443543479b3d972
```

The core dump is reproducable in the example below: 

#### Code Sample, a copy-pastable example if possible

```python
import pyodbc
import pandas as pd

con_str = f"Driver=libclickhouseodbc.so;url=http://clickhouse/query;timeout=600"
with pyodbc.connect(con_str, autocommit=True) as con:
    pass

df = pd.DataFrame({'A': [1,1,1], 'B': ['a', 'b', 'c']})
df.to_parquet('/tmp/foo.pq')
# This line core dumps:
pd.read_parquet('/tmp/foo.pq')
```
#### Problem description

In the code above, creating the clickhouse odbc connection (not using it) leads to a segfault when reading the parquet file:

```
terminate called after throwing an instance of 'std::bad_cast'
  what():  std::bad_cast
Aborted (core dumped)
```

This does not happen in pandas 0.25.3 but does in pandas 1.0.1. 

#### Expected Output

No core dump.

#### Odbc driver dependencies

```xbk@499e30e4f63f:$ ldd libclickhouseodbc.so
        linux-vdso.so.1 (0x00007ffe02bee000)
        libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f246c269000)
        librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f246c061000)
        libltdl.so.7 => /usr/lib/x86_64-linux-gnu/libltdl.so.7 (0x00007f246be57000)
        libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f246ba66000)
        /lib64/ld-linux-x86-64.so.2 (0x00007f246cd89000)
        libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f246b862000)
```

#### Output of ``pd.show_versions()``

<details>

[paste the output of ``pd.show_versions()`` here below this line]
>>> pd.show_versions()

INSTALLED VERSIONS
------------------
commit           : None
python           : 3.6.9.final.0
python-bits      : 64
OS               : Linux
OS-release       : 3.10.0-1062.4.3.el7.x86_64
machine          : x86_64
processor        : x86_64
byteorder        : little
LC_ALL           : None
LANG             : None
LOCALE           : None.None

pandas           : 1.0.1
numpy            : 1.18.1
pytz             : 2019.3
dateutil         : 2.8.0
pip              : 9.0.1
setuptools       : 45.2.0
Cython           : 0.29.14
pytest           : 5.3.2
hypothesis       : 5.1.2
sphinx           : None
blosc            : None
feather          : None
xlsxwriter       : None
lxml.etree       : None
html5lib         : 0.999999999
pymysql          : None
psycopg2         : None
jinja2           : 2.11.1
IPython          : 7.12.0
pandas_datareader: None
bs4              : None
bottleneck       : None
fastparquet      : None
gcsfs            : None
lxml.etree       : None
matplotlib       : 3.1.2
numexpr          : None
odfpy            : None
openpyxl         : 3.0.2
pandas_gbq       : None
pyarrow          : 0.15.1.dev539+g8cf0c8e0a
pytables         : None
pytest           : 5.3.2
pyxlsb           : None
s3fs             : None
scipy            : 1.4.1
sqlalchemy       : 1.3.11
tables           : None
tabulate         : None
xarray           : None
xlrd             : 1.2.0
xlwt             : None
xlsxwriter       : None
numba            : None
</details>
