Index: /trunk/src/VBox/Runtime/common/string/utf-16.cpp
===================================================================
--- /trunk/src/VBox/Runtime/common/string/utf-16.cpp	(revision 50794)
+++ /trunk/src/VBox/Runtime/common/string/utf-16.cpp	(revision 50795)
@@ -326,5 +326,5 @@
      * Use rtUtf16Length for the job.
      */
-    size_t cwcActual;
+    size_t cwcActual = 0; /* Shut up cc1plus. */
     size_t cCpsIgnored;
     int rc = rtUtf16Length(pwsz, cwc, &cCpsIgnored, &cwcActual);