WRG: fix warnings from ossim via pragma

Modules/Adapters/OSSIMAdapters/src/otbDEMConvertAdapter.cxx

Modules/Adapters/OSSIMAdapters/src/otbDEMHandler.cxx

Modules/Adapters/OSSIMAdapters/src/otbEllipsoidAdapter.cxx

...s/OSSIMAdapters/src/otbGeometricSarSensorModelAdapter.cxx

Modules/Adapters/OSSIMAdapters/src/otbImageKeywordlist.cxx

...es/Adapters/OSSIMAdapters/src/otbMapProjectionAdapter.cxx

Modules/Adapters/OSSIMAdapters/src/otbRPCSolverAdapter.cxx

Modules/Adapters/OSSIMAdapters/src/otbSensorModelAdapter.cxx

...rty/OssimPlugins/src/ossim/ossimGeometricSarSensorModel.h