Fixed style errors

Library/Homebrew/test/language/node_spec.rb

@@ -11,14 +11,14 @@ describe Language::Node do
   describe "#pack_for_installation" do
     it "raises error with non zero exitstatus" do
       shutup do
-  			expect{described_class.pack_for_installation}.to raise_error
+        expect { described_class.pack_for_installation }.to raise_error
       end
     end
 
     it "does not raise error with a zero exitstatus" do
       shutup do
         allow_any_instance_of(Process::Status).to receive(:exitstatus).and_return(0)
-  			expect{described_class.pack_for_installation}.not_to raise_error
+        expect { described_class.pack_for_installation }.not_to raise_error
       end
     end
   end
@@ -53,5 +53,4 @@ describe Language::Node do
       expect(resp).to eq(["--verbose"])
     end
   end
-
 end