message: Fix multiple fbs code generation failure
diff: @@ -48,7 +48,11 @@ android {
  standardOutput = new ByteArrayOutputStream()
  errorOutput = new ByteArrayOutputStream()
  - commandLine 'flatc', '-o', outputCppDir, '--cpp', "${fbsFiles.join(" ")}"
  + def commandLineArgs = ['flatc', '-o', outputCppDir, '--cpp']
  + fbsFiles.forEach{
  + commandLineArgs.add(it.path)
  + }
  + commandLine commandLineArgs
  doFirst {
  delete "$outputCppDir/"
  @@ -70,7 +74,11 @@ android {
  standardOutput = new ByteArrayOutputStream()
  errorOutput = new ByteArrayOutputStream()
  - commandLine 'flatc', '-o', outputKotlinDir, '--kotlin', "${fbsFiles.join(" ")}"
  + def commandLineArgs = ['flatc', '-o', outputKotlinDir, '--kotlin']
  + fbsFiles.forEach{
  + commandLineArgs.add(it.path)
  + }
  + commandLine commandLineArgs
  doFirst {
  delete "$outputKotlinDir/"
  