remove unnecessary RTL_CONSTASCII_STRINGPARAM in appendAscii calls

Convert code like:
    aStrBuf.appendAscii( RTL_CONSTASCII_STRINGPARAM( "ln(x)" ));
to:
    aStrBuf.append( "ln(x)" );
which compiles down to the same code.

Change-Id: I24c7cb45ceb32fd7cd6ec7ed203c2a5d746f1c5c

cppu/source/uno/loadmodule.cxx

@@ -34,10 +34,10 @@ namespace cppu { namespace detail {
 ::oslModule loadModule(rtl::OUString const & name) {
     rtl::OUStringBuffer b;
 #if defined SAL_DLLPREFIX
-    b.appendAscii(RTL_CONSTASCII_STRINGPARAM(SAL_DLLPREFIX));
+    b.append(SAL_DLLPREFIX);
 #endif
     b.append(name);
-    b.appendAscii(RTL_CONSTASCII_STRINGPARAM(SAL_DLLEXTENSION));
+    b.append(SAL_DLLEXTENSION);
     return ::osl_loadModuleRelative(
         reinterpret_cast< oslGenericFunction >(&loadModule),
         b.makeStringAndClear().pData,