silence gcc4.8 warning

Change-Id: I1e433d6011de22e018b5324754f00065f2bfa6eb

sc/inc/formularesult.hxx

@@ -73,7 +73,15 @@ class ScFormulaResult
     bool                mbToken :1; // whether content of union is a token
     bool                mbEmpty :1; // empty cell result
     bool                mbEmptyDisplayedAsString :1;    // only if mbEmpty
+// GCC4.8 complains about 'ScFormulaResult::meMultiline is too small to hold all values of enum class ScFormulaResult::Multiline'
+#if defined __GNUC__ && !defined __clang__
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Werror"
+#endif
     Multiline           meMultiline :2; // result is multiline
+#if defined __GNUC__ && !defined __clang__
+#pragma GCC diagnostic pop
+#endif
 
     /** Reset mnError, mbEmpty and mbEmptyDisplayedAsString to their defaults
         prior to assigning other types */