Add example without defer statement

Author: mbg

go/ql/src/InconsistentCode/UnhandledCloseWritableHandle.qhelp

@@ -21,11 +21,21 @@ Always check whether <code>os.File.Close</code> returned an error and handle it
 </recommendation>
 
 <example>
+
+<p>
+In this first example, two calls to <code>os.File.Close</code> are made with the intention of
+closing the file after all work on it has been done or if writing to it fails. However, while
+errors that may arise during the call to <code>os.File.WriteString</code> are handled, any
+errors arising from the calls to <code>os.File.Close</code> are discarded silently:
+</p>
+
+<sample src="UnhandledCloseWritableHandleNotDeferred.go" />
+
 <p>
-In the following example, a call to <code>os.File.Close</code> is deferred with the intention of
-closing the file after all work on it has been done. However, while errors that may arise during
+In the second example, a call to <code>os.File.Close</code> is deferred in order to accomplish
+the same behaviour as in the first example. However, while errors that may arise during
 the call to <code>os.File.WriteString</code> are handled, any errors arising from
-<code>os.File.Close</code> are discarded silently:
+<code>os.File.Close</code> are again discarded silently:
 </p>
 
 <sample src="UnhandledCloseWritableHandle.go" />

go/ql/src/InconsistentCode/UnhandledCloseWritableHandleNotDeferred.go

@@ -0,0 +1,22 @@
+package main
+
+import (
+	"os"
+)
+
+func example() error {
+	f, err := os.OpenFile("file.txt", os.O_WRONLY|os.O_CREATE, 0666)
+
+	if err != nil {
+		return err
+	}
+
+	if _, err := f.WriteString("Hello"); err != nil {
+		f.Close()
+		return err
+	}
+
+	f.Close()
+
+	return nil
+}