fix crash

Author: leavez

lib/cocoapods-binary/helper/feature_switches.rb

@@ -38,8 +38,7 @@ def self.enable_prebuild_patch(value)
                 end
 
                 if should_prebuild and (not local)
-                    platform = current_target_definition.platform
-                    if !platform.nil? and platform.name == :watchos
+                    if current_target_definition.platform == :watchos
                         # watchos isn't supported currently
                         Pod::UI.warn "Binary doesn't support watchos currently: #{name}. You can manually set `binary => false` for this pod to suppress this warning."
                         return

lib/cocoapods-binary/helper/podfile_options.rb

@@ -24,7 +24,7 @@ def set_prebuild_for_pod(pod_name, should_prebuild)
 
             if should_prebuild == true
                 # watchos isn't supported currently
-                return if self.platform.name == :watchos
+                return if self.platform == :watchos
 
                 @prebuild_framework_names ||= []
                 @prebuild_framework_names.push pod_name
@@ -71,7 +71,7 @@ def prebuild_pod_targets
 
             all = []
 
-            aggregate_targets = self.aggregate_targets.select { |a| a.platform.name != :watchos }
+            aggregate_targets = self.aggregate_targets.select { |a| a.platform != :watchos }
             aggregate_targets.each do |aggregate_target|
                 target_definition = aggregate_target.target_definition
                 targets = aggregate_target.pod_targets || []