fixed several gcc 4.1 warnings

modules/objdetect/src/_latentsvm.h

@@ -2,8 +2,8 @@
 /*                      Latent SVM prediction API                            */
 /*****************************************************************************/
 
-#ifndef SVM_LATENTSVM
-#define SVM_LATENTSVM
+#ifndef _LATENTSVM_H_
+#define _LATENTSVM_H_
 
 #include <stdio.h>
 #include "_lsvm_types.h"
@@ -397,4 +397,4 @@ int showBoxes(IplImage *img,
               const CvPoint *points, const CvPoint *oppositePoints, int kPoints, 
               CvScalar color, int thickness, int line_type, int shift);
 
-#endif
+#endif