Unreleased Resource: Streams

[QiAnXinCodeSafe]

botbuilder-java/libraries/bot-connector/src/main/java/com/microsoft/bot/connector/ConnectorConfiguration.java

Lines 23 to 25 in 1dca1dc

	InputStream propStream = UserAgent.class.getClassLoader()
	.getResourceAsStream("connector.properties");
	properties.load(propStream);

The program can potentially fail to release a system resource.

[tracyboehrer]

@QiAnXinCodeSafe Thanks! Fixing now.