reload is a noop if get returns nil

lib/fog/aws/models/ec2/address.rb

@@ -34,8 +34,9 @@ module Fog
         end
 
         def reload
-          new_attributes = addresses.get(@public_ip).attributes
-          merge_attributes(new_attributes)
+          if new_address = addresses.get(@public_ip)
+            merge_attributes(new_address.attributes)
+          end
         end
 
         def save

lib/fog/aws/models/ec2/instance.rb

@@ -68,8 +68,9 @@ module Fog
         end
 
         def reload
-          new_attributes = instances.all(@instance_id).first.attributes
-          merge_attributes(new_attributes)
+          if new_instance = instances.get(@instance_id)
+            merge_attributes(new_instance.attributes)
+          end
         end
 
         def save

lib/fog/aws/models/ec2/key_pair.rb

@@ -18,8 +18,9 @@ module Fog
         end
 
         def reload
-          new_attributes = key_pairs.all(@name).first.attributes
-          merge_attributes(new_attributes)
+          if new_key_pair = key_pairs.get(@name)
+            merge_attributes(new_key_pair.attributes)
+          end
         end
 
         def save

lib/fog/aws/models/ec2/security_group.rb

@@ -15,8 +15,9 @@ module Fog
         end
 
         def reload
-          new_attributes = security_groups.get(@group_name).attributes
-          merge_attributes(new_attributes)
+          if new_security_group = security_groups.get(@group_name)
+            merge_attributes(new_security_group.attributes)
+          end
         end
 
         def save

lib/fog/aws/models/ec2/snapshot.rb

@@ -16,8 +16,9 @@ module Fog
         end
 
         def reload
-          new_attributes = snapshots.get(@snapshot_id).attributes
-          merge_attributes(new_attributes)
+          if new_snapshot = snapshots.get(@snapshot_id)
+            merge_attributes(new_snapshot.attributes)
+          end
         end
 
         def save