Merge pull request #780 from crafty78/master

Close JavaFileManager after use.

h2/src/main/org/h2/util/SourceCompiler.java

@@ -326,9 +326,9 @@ public class SourceCompiler {
     Class<?> javaxToolsJavac(String packageName, String className, String source) {
         String fullClassName = packageName + "." + className;
         StringWriter writer = new StringWriter();
-        JavaFileManager fileManager = new
+        try (JavaFileManager fileManager = new
                 ClassFileManager(JAVA_COMPILER
-                    .getStandardFileManager(null, null, null));
+                    .getStandardFileManager(null, null, null))) {
             ArrayList<JavaFileObject> compilationUnits = new ArrayList<>();
             compilationUnits.add(new StringJavaFileObject(fullClassName, source));
             // cannot concurrently compile
@@ -338,9 +338,8 @@ public class SourceCompiler {
             }
             String output = writer.toString();
             handleSyntaxError(output);
-        try {
             return fileManager.getClassLoader(null).loadClass(fullClassName);
-        } catch (ClassNotFoundException e) {
+        } catch (ClassNotFoundException | IOException e) {
             throw DbException.convert(e);
         }
     }