* convolution.c: fix a small memory leak in the convolution filter.

git-svn-id: file:///srv/caca.zoy.org/var/lib/svn/libpipi/trunk@2684 92316355-f0b4-4df1-b90c-862c8a59935f

pipi/filter/convolution.c

@@ -35,6 +35,7 @@ static pipi_image_t *pipi_convolution_separable(pipi_image_t *src,
 
 pipi_image_t *pipi_convolution(pipi_image_t *src, int m, int n, double mat[])
 {
+    pipi_image_t *ret;
     double tmp;
     double *hvec, *vvec;
     int i, j, besti = -1, bestj = -1;
@@ -75,7 +76,6 @@ pipi_image_t *pipi_convolution(pipi_image_t *src, int m, int n, double mat[])
     }
 
     /* Matrix rank is 1! Separate the filter */
-    /* FIXME: memleak */
     hvec = malloc(m * sizeof(double));
     vvec = malloc(n * sizeof(double));
 
@@ -85,7 +85,12 @@ pipi_image_t *pipi_convolution(pipi_image_t *src, int m, int n, double mat[])
     for(j = 0; j < n; j++)
         vvec[j] = mat[j * m + besti] / tmp;
 
-    return pipi_convolution_separable(src, m, hvec, n, vvec);
+    ret = pipi_convolution_separable(src, m, hvec, n, vvec);
+
+    free(hvec);
+    free(vvec);
+
+    return ret;
 }
 
 static pipi_image_t *pipi_convolution_standard(pipi_image_t *src,