coverity#1158332 Uncaught exception

Change-Id: I3692ad46afcca1be47fbd983fdcb19693a6811e9

sc/inc/chart2uno.hxx

@@ -270,7 +270,9 @@ public:
 
     // XTextualDataSequence
     virtual ::com::sun::star::uno::Sequence< OUString >
-        SAL_CALL getTextualData(  ) throw (::com::sun::star::uno::RuntimeException);
+        SAL_CALL getTextualData()
+            throw (::com::sun::star::uno::RuntimeException,
+                   std::exception);
 
     // XPropertySet
     virtual ::com::sun::star::uno::Reference<

sc/source/ui/unoobj/chart2uno.cxx

@@ -3046,7 +3046,8 @@ uno::Sequence< double > SAL_CALL ScChart2DataSequence::getNumericalData()
 
 // XTextualDataSequence --------------------------------------------------
 
-uno::Sequence< OUString > SAL_CALL ScChart2DataSequence::getTextualData(  ) throw (uno::RuntimeException)
+uno::Sequence< OUString > SAL_CALL ScChart2DataSequence::getTextualData()
+    throw (uno::RuntimeException, std::exception)
 {
     SolarMutexGuard aGuard;
     uno::Sequence<OUString> aSeq;