core: fix the dgst_from_string function for Python 2.4 compatibility. It can't

have worked and must have returned empty md5 hashes, and I assume that the
function isn't actually used anywhere.

osc/core.py

@@ -2291,15 +2291,16 @@ def get_binary_file(apiurl, prj, repo, arch,
         except: pass
 
 def dgst_from_string(str):
+    # Python 2.5 depracates the md5 modules
+    # Python 2.4 doesn't have hashlib yet
     try:
         import hashlib
-        md5 = hashlib
+        md5_hash = hashlib.md5()
     except ImportError:
         import md5
-        md5 = md5
-    s = md5.md5()
-    s.update(str)
-    return s.hexdigest()
+        md5_hash = md5.new()
+    md5_hash.update(str)
+    return md5_hash.hexdigest()
 
 def dgst(file):