[rubygems/rubygems] Small tweak

ruby/rubygems@98641d21a2

Author: deivid-rodriguez

lib/bundler/lazy_specification.rb

@@ -108,7 +108,7 @@ def materialize_for_installation(most_specific_locked_platform = nil)
       candidates = if use_exact_resolved_specifications?(most_specific_locked_platform)
         matching_specs
       else
-        target_platform = ruby_platform_materializes_to_ruby_platform?(most_specific_locked_platform) ? platform : local_platform
+        target_platform = source.is_a?(Source::Path) ? platform : local_platform
 
         installable_candidates = GemHelpers.select_best_platform_match(matching_specs, target_platform)