Fixes of some memory leaks

modules/objdetect/src/hog.cpp

@@ -2619,8 +2619,10 @@ void HOGDescriptor::readALTModel(std::string modelfile)
        double *linearwt = new double[totwords+1];
        int length = totwords;
        nread = fread(linearwt, sizeof(double), totwords + 1, modelfl);
-       if(nread != static_cast<size_t>(length) + 1)
+       if(nread != static_cast<size_t>(length) + 1) {
+           delete [] linearwt;
            throw Exception();
+       }
 
        for(int i = 0; i < length; i++)
            detector.push_back((float)linearwt[i]);

modules/objdetect/src/latentsvmdetector.cpp

@@ -142,6 +142,7 @@ CvSeq* cvLatentSvmDetectObjects(IplImage* image,
     free(points);
     free(oppPoints);
     free(score);
+    free(scoreOut);
 
     return result_seq;
 }

modules/objdetect/src/lsvmparser.cpp

@@ -741,8 +741,11 @@ int LSVMparser(const char * filename, CvLSVMFilterObject *** model, int *last, i
     //printf("parse : %s\n", filename);
 
     xmlf = fopen(filename, "rb");
-    if(xmlf == NULL)
+    if(xmlf == NULL) {
+        free(*model);
+        *model = NULL;
         return LSVM_PARSER_FILE_NOT_FOUND;
+    }
 
     //i   = 0;
     j   = 0;
@@ -808,6 +811,7 @@ int loadModel(
         (*kPartFilters)[i] = (comp[i] - comp[i - 1]) - 1;
     }
     (*kPartFilters)[0] = comp[0];
+    free(comp);
 
     return 0;
 }