Old typo, benign but spams the TrialPolicy log

The provider() method on a service provider has to be static.
Misdeclaring this one never broke anything, as the service loader
simply fell back on the constructor, but later service loader
passes after the policy gets installed would cause false-alarm
log entries from the constructor.

Author: jcflack

pljava/src/main/java/org/postgresql/pljava/sqlj/Handler.java

@@ -29,7 +29,7 @@ public class Handler extends URLStreamHandlerProvider
 {
 	private static final Handler INSTANCE = new Handler();
 
-	public URLStreamHandlerProvider provider()
+	public static URLStreamHandlerProvider provider()
 	{
 		return INSTANCE;
 	}