Remove trailing spaces

Author: bkmgit

app/server/ruby/bin/compile-extensions.rb

@@ -66,7 +66,7 @@
   end
   puts "Compiling native extension in #{ext_dir}"
   Dir.chdir(ext_dir) do
-    `"#{RbConfig.ruby}" extconf.rb`   
+    `"#{RbConfig.ruby}" extconf.rb`
     `make clean`
     `make`
   end