cppuhelper: Use appropriate OUString functions on string constants

Change-Id: I52a38a07982801087903817ec5b65e992a1d58d1

cppuhelper/source/component.cxx

@@ -197,8 +197,7 @@ void OComponentHelper::dispose()
         catch (Exception & exc)
         {
             throw RuntimeException(
-                OUString("unexpected UNO exception caught: ") +
-                exc.Message );
+                "unexpected UNO exception caught: " + exc.Message );
         }
     }
     else

cppuhelper/source/implbase.cxx

@@ -128,8 +128,7 @@ void WeakComponentImplHelperBase::dispose()
         catch (Exception & exc)
         {
             throw RuntimeException(
-                OUString("unexpected UNO exception caught: ") +
-                exc.Message );
+                "unexpected UNO exception caught: " + exc.Message );
         }
     }
 }
@@ -261,8 +260,7 @@ void WeakAggComponentImplHelperBase::dispose()
         catch (Exception & exc)
         {
             throw RuntimeException(
-                OUString("unexpected UNO exception caught: ") +
-                exc.Message );
+                "unexpected UNO exception caught: " + exc.Message );
         }
     }
 }