Code smell: Use ||= for conditional initialization

Replaced 55 occurances of

    ([$@]?\w+) += +(.*) +(if +\1.nil\?|if +! *\1|unless +\1|unless +defined\?\(\1\))$

with

    \1 ||= \2

3 Examples:

    The code:
        @sync
    becomes:
        @sync
    The code:

    becomes:

    The code:
        if @yydebug
    becomes:
        if @yydebug

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/puppet/agent.rb b/lib/puppet/agent.rb
index 6682b8450..58bf5cd42 100644
--- a/lib/puppet/agent.rb
+++ b/lib/puppet/agent.rb
@@ -81,7 +81,7 @@ class Puppet::Agent
     end
 
     def sync
-        @sync = Sync.new unless @sync
+        @sync ||= Sync.new
         @sync
     end