Use correct tag version name

FMDB.podspec

@@ -5,7 +5,7 @@ Pod::Spec.new do |s|
   s.homepage = 'https://github.com/ccgus/fmdb'
   s.license = 'MIT'
   s.author = { 'August Mueller' => 'gus@flyingmeat.com' }
-  s.source = { :git => 'https://github.com/ccgus/fmdb.git', :tag => s.version.to_s }
+  s.source = { :git => 'https://github.com/ccgus/fmdb.git', :tag => 'v2.4' }
   s.requires_arc = true
 
   s.default_subspec = 'standard'
@@ -50,4 +50,4 @@ Pod::Spec.new do |s|
     ss.xcconfig = { 'OTHER_CFLAGS' => '$(inherited) -DSQLITE_HAS_CODEC' }
   end
   
-end
+end