WaE: equalsIgnoreAsciiCaseAscii -> equalsIgnoreAsciiCase [loplugin]

rewrite call of rtl::OUString::equalsIgnoreAsciiCaseAscii with string literal
argument as call of rtl::OUString::equalsIgnoreAsciiCase [loplugin]

Change-Id: Ia4dcbf6f5233a5aa91c609902da0a1037bcc3a48

i18nlangtag/source/languagetag/languagetag.cxx

@@ -1524,7 +1524,7 @@ LanguageTag::Extraction LanguageTag::simpleExtract( const OUString& rBcp47,
             // Known and handled grandfathered; ugly but effective ...
             // Note that nLen must have matched above.
             // Strictly not a variant, but so far we treat it as such.
-            if (rBcp47.equalsIgnoreAsciiCaseAscii( "en-GB-oed"))
+            if (rBcp47.equalsIgnoreAsciiCase( "en-GB-oed"))
             {
                 rLanguage = "en";
                 rScript   = OUString();