Fix minor leftover from strstream to sstream conversion not done in previous

commit.

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>
(cherry picked from commit d8a9ad699f)

src/base/NotationTypes.cpp

@@ -476,19 +476,10 @@ Key::Key(int accidentalCount, bool isSharp, bool isMinor) :
         }
     }
 
-#if (__GNUC__ < 3)
-    std::ostrstream os;
-#else
     std::ostringstream os;
-#endif
-
     os << "No " << (isMinor ? "minor" : "major") << " key with "
        << accidentalCount << (isSharp ? " sharp(s)" : " flat(s)");
 
-#if (__GNUC__ < 3)
-    os << std::ends;
-#endif
-
     throw BadKeySpec(os.str());
 }
 
@@ -509,19 +500,11 @@ Key::Key(int tonicPitch, bool isMinor) :
         }
     }
 
-#if (__GNUC__ < 3)
-    std::ostrstream os;
-#else
     std::ostringstream os;
-#endif
 
     os << "No " << (isMinor ? "minor" : "major") << " key with tonic pitch "
        << tonicPitch;
 
-#if (__GNUC__ < 3)
-    os << std::ends;
-#endif
-
     throw BadKeySpec(os.str());
 }