silence codeql warnings

python/lammps/__init__.py

@@ -29,14 +29,16 @@ def get_version_number():
         try:
             vstring = version('lammps')
         except:
-            vstring = None
+            # nothing to do, ignore
+            pass
 
     else:
         from pkg_resources import get_distribution
         try:
             vstring = get_distribution('lammps').version
         except:
-            vstring = None
+            # nothing to do, ignore
+            pass
 
     if not vstring:
         return 0

python/lammps/core.py

@@ -778,6 +778,8 @@ class lammps(object):
     elif dtype == LAMMPS_STRING:
       self.lib.lammps_extract_global.restype = c_char_p
       target_type = str
+    else:
+      target_type = None
 
     ptr = self.lib.lammps_extract_global(self.lmp, name)
     if ptr: