Ensure Reader is closed in ShellDocumentationProvider.

Change-Id: I663f473ff500b85b803bb2a07433361fd1a589f8
Signed-off-by: Alexander Kurtakov <akurtako@redhat.com>
diff --git a/plugins/org.eclipse.dltk.sh.ui/src/org/eclipse/dltk/sh/internal/ui/selection/ShellDocumentationProvider.java b/plugins/org.eclipse.dltk.sh.ui/src/org/eclipse/dltk/sh/internal/ui/selection/ShellDocumentationProvider.java
index 9f9646a..239300e 100644
--- a/plugins/org.eclipse.dltk.sh.ui/src/org/eclipse/dltk/sh/internal/ui/selection/ShellDocumentationProvider.java
+++ b/plugins/org.eclipse.dltk.sh.ui/src/org/eclipse/dltk/sh/internal/ui/selection/ShellDocumentationProvider.java
@@ -46,13 +46,14 @@
 		final StringBuilder out = new StringBuilder();
 		try (InputStream stream = process.start().getInputStream()) {
 			final char[] buffer = new char[1024];
-			Reader in = new InputStreamReader(stream);
-			for (;;) {
-				int rsz = in.read(buffer, 0, buffer.length);
-				if (rsz < 0) {
-					break;
+			try (Reader in = new InputStreamReader(stream)) {
+				for (;;) {
+					int rsz = in.read(buffer, 0, buffer.length);
+					if (rsz < 0) {
+						break;
+					}
+					out.append(buffer, 0, rsz);
 				}
-				out.append(buffer, 0, rsz);
 			}
 		} catch (IOException e) {
 			e.printStackTrace();