convert: svn: hoist up branch creation check

hgext/convert/subversion.py

@@ -377,10 +377,10 b' class convert_svn(converter_source):'
 
             orig_paths = orig_paths.items()
             orig_paths.sort()
-            for path, ent in orig_paths:
-                # self.ui.write("path %s\n" % path)
-                if path == self.module: # Follow branching back in history
-                    if ent:
+            
+            # check whether this revision is the start of a branch
+            path, ent = orig_paths and orig_paths[0] or (None, None)
+            if ent and path == self.module:
                         if ent.copyfrom_path:
                             # ent.copyfrom_rev may not be the actual last revision
                             prev = self.latest(ent.copyfrom_path, ent.copyfrom_rev)
@@ -390,7 +390,9 b' class convert_svn(converter_source):'
                                          (self.module, prev, ent.copyfrom_path))
                         else:
                             self.ui.debug("No copyfrom path, don't know what to do.\n")
-                            # Maybe it was added and there is no more history.
+
+            for path, ent in orig_paths:
+                # self.ui.write("path %s\n" % path)
                 entrypath = get_entry_from_path(path, module=self.module)
                 # self.ui.write("entrypath %s\n" % entrypath)
                 if entrypath is None: