fixed EdgeSE3XYZPrior not defined build error when using latest g2o version (#360 #363)

corelib/src/optimizer/g2o/edge_se3_xyzprior.cpp

@@ -26,6 +26,8 @@
 
 #include "edge_se3_xyzprior.h"
 
+namespace rtabmap {
+
 EdgeSE3XYZPrior::EdgeSE3XYZPrior() : BaseUnaryEdge<3, Eigen::Vector3d, g2o::VertexSE3>()
 {
   information().setIdentity();
@@ -105,3 +107,5 @@ void EdgeSE3XYZPrior::initialEstimate(const g2o::OptimizableGraph::VertexSet& /*
   }
   v->setEstimate(newEstimate);
 }
+
+}

corelib/src/optimizer/g2o/edge_se3_xyzprior.h

@@ -24,13 +24,15 @@
 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-#ifndef G2O_EDGE_SE3_PRIOR_XYZ_H
-#define G2O_EDGE_SE3_PRIOR_XYZ_H
+#ifndef RTAB_G2O_EDGE_SE3_PRIOR_XYZ_H
+#define RTAB_G2O_EDGE_SE3_PRIOR_XYZ_H
 
 #include "g2o/types/slam3d/vertex_se3.h"
 #include "g2o/core/base_unary_edge.h"
 #include "g2o/types/slam3d/parameter_se3_offset.h"
 
+namespace rtabmap {
+
 /**
 * \brief Prior for a 3D pose with constraints only in xyz direction
 */
@@ -75,4 +77,6 @@ protected:
   g2o::CacheSE3Offset* _cache;
 };
 
+}
+
 #endif