Print the important failure messages on iOS even in a non-debug build

It might be that having fprintfs leftover in an app submitted to the
App Store is a no-go, but will fix that then if/when it happens.

Change-Id: Ic671fcce567c655a06fd4ed139100dc9b6f435be

cppuhelper/source/shlib.cxx

@@ -197,6 +197,10 @@ void cppuhelper::detail::loadSharedLibComponentFactory(
         }
         if (fp == 0) {
             SAL_WARN("cppuhelper", "unknown factory name \"" << name << "\"");
+#if defined IOS && !defined SAL_LOG_WARN
+            // If the above SAL_WARN expanded to nothing, print to stderr...
+            fprintf(stderr, "Unknown factory name %s\n", OUStringToOString(name, RTL_TEXTENCODING_UTF8).getStr());
+#endif
             throw css::loader::CannotActivateFactoryException(
                 "unknown factory name \"" + name + "\"",
                 css::uno::Reference<css::uno::XInterface>());
@@ -217,6 +221,10 @@ void cppuhelper::detail::loadSharedLibComponentFactory(
             }
         }
         SAL_WARN("cppuhelper", "unknown constructor name \"" << constructor << "\"");
+#if defined IOS && !defined SAL_LOG_WARN
+            // If the above SAL_WARN expanded to nothing, print to stderr...
+            fprintf(stderr, "Unknown constructor name %s\n", OUStringToOString(constructor, RTL_TEXTENCODING_UTF8).getStr());
+#endif
         throw css::loader::CannotActivateFactoryException(
             "unknown constructor name \"" + constructor + "\"",
             css::uno::Reference<css::uno::XInterface>());