Fixed a bug in sf::Err (the default output for SFML error messages), it was ignoring random characters

git-svn-id: https://sfml.svn.sourceforge.net/svnroot/sfml/branches/sfml2@1578 4e206d99-4929-0410-ac5d-dfc041789085

src/SFML/System/Err.cpp

@@ -67,9 +67,15 @@ private :
             // Valid character
             return sputc(static_cast<char>(character));
         }
+        else if (character != EOF)
+        {
+            // Not enough space in the buffer: synchronize output and try again
+            sync();
+            return overflow(character);
+        }
         else
         {
-            // Invalid character, or not enough space in the buffer: synchronize output
+            // Invalid character: synchronize output
             return sync();
         }
     }