message: filamat-android: fix string leaks
diff: @@ -81,6 +81,7 @@ Java_com_google_android_filament_filamat_MaterialBuilder_nMaterialBuilderName(JN
  auto builder = (MaterialBuilder*) nativeBuilder;
  const char* name = env->GetStringUTFChars(name_, nullptr);
  builder->name(name);
  + env->ReleaseStringUTFChars(name_, name);
  }
  extern "C" JNIEXPORT void JNICALL
  @@ -110,6 +111,7 @@ Java_com_google_android_filament_filamat_MaterialBuilder_nMaterialBuilderUniform
  auto builder = (MaterialBuilder*) nativeBuilder;
  const char* name = env->GetStringUTFChars(name_, nullptr);
  builder->parameter((MaterialBuilder::UniformType) uniformType, name);
  + env->ReleaseStringUTFChars(name_, name);
  }
  extern "C" JNIEXPORT void JNICALL
  @@ -118,6 +120,7 @@ Java_com_google_android_filament_filamat_MaterialBuilder_nMaterialBuilderUniform
  auto builder = (MaterialBuilder*) nativeBuilder;
  const char* name = env->GetStringUTFChars(name_, nullptr);
  builder->parameter((MaterialBuilder::UniformType) uniformType, (size_t) size, name);
  + env->ReleaseStringUTFChars(name_, name);
  }
  extern "C" JNIEXPORT void JNICALL
  @@ -129,6 +132,7 @@ Java_com_google_android_filament_filamat_MaterialBuilder_nMaterialBuilderSampler
  builder->parameter((MaterialBuilder::SamplerType) samplerType,
  (MaterialBuilder::SamplerFormat) format, (MaterialBuilder::SamplerPrecision) precision,
  name);
  + env->ReleaseStringUTFChars(name_, name);
  }
  extern "C" JNIEXPORT void JNICALL
  @@ -137,6 +141,7 @@ Java_com_google_android_filament_filamat_MaterialBuilder_nMaterialBuilderVariabl
  const char* name = env->GetStringUTFChars(name_, nullptr);
  auto builder = (MaterialBuilder*) nativeBuilder;
  builder->variable((MaterialBuilder::Variable) variable, name);
  + env->ReleaseStringUTFChars(name_, name);
  }
  extern "C" JNIEXPORT void JNICALL
  @@ -152,6 +157,7 @@ Java_com_google_android_filament_filamat_MaterialBuilder_nMaterialBuilderMateria
  auto builder = (MaterialBuilder*) nativeBuilder;
  const char* code = env->GetStringUTFChars(code_, nullptr);
  builder->material(code);
  + env->ReleaseStringUTFChars(code_, code);
  }
  extern "C" JNIEXPORT void JNICALL
  @@ -160,6 +166,7 @@ Java_com_google_android_filament_filamat_MaterialBuilder_nMaterialBuilderMateria
  auto builder = (MaterialBuilder*) nativeBuilder;
  const char* code = env->GetStringUTFChars(code_, nullptr);
  builder->materialVertex(code);
  + env->ReleaseStringUTFChars(code_, code);
  }
  extern "C" JNIEXPORT void JNICALL
  