Fix runtime error when updating Package Control

Fixes #1649

This commit silently ignores RuntimeErrors raised by `use_openssl()`,
if oscrypto has already been imported before. That's the case if modules are
reloaded after Package Control update.

package_control/downloaders/oscrypto_downloader.py

@@ -36,10 +36,13 @@
         'sublime_text' in sys.executable or
         'plugin_host' in sys.executable):
     install_dir = os.path.dirname(sys.executable)
-    use_openssl(
-        os.path.join(install_dir, 'libcrypto.so.1.1'),
-        os.path.join(install_dir, 'libssl.so.1.1')
-    )
+    try:
+        use_openssl(
+            os.path.join(install_dir, 'libcrypto.so.1.1'),
+            os.path.join(install_dir, 'libssl.so.1.1')
+        )
+    except RuntimeError:
+        pass  # runtime error may be raised, when reloading modules.
 
 from ..deps.oscrypto import tls  # noqa
 from ..deps.oscrypto import errors as oscrypto_errors  # noqa