Clang: Add symbol storage

Extend file path cache to 64 bit integer.

Change-Id: I5627f13d59a3214f389087038482cbcc8d0eb484
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>

src/libs/utils/smallstringview.h

@@ -140,6 +140,8 @@ public:
         return m_pointer[0] == characterToSearch;
     }
 
+
+
 private:
     const char *m_pointer;
     size_type m_size;