Coverity scan found we didn't check return for inflateInit() in zlib

src/skew.c

@@ -160,7 +160,6 @@ static const l_int32  DefaultBinaryThreshold = 130;
  *      (1) This binarizes if necessary and does both horizontal
  *          and vertical deskewing, using the default parameters in
  *          the underlying pixDeskew().  See usage there.
- *      (2) This may return a clone.
  * </pre>
  */
 PIX *

src/zlibmem.c

@@ -122,7 +122,6 @@ z_stream    z;
     z.zalloc = (alloc_func)0;
     z.zfree = (free_func)0;
     z.opaque = (voidpf)0;
-
     z.next_in = bufferin;
     z.avail_in = 0;
     z.next_out = bufferout;
@@ -222,14 +221,17 @@ z_stream    z;
 
     z.zalloc = (alloc_func)0;
     z.zfree = (free_func)0;
-
     z.next_in = bufferin;
     z.avail_in = 0;
     z.next_out = bufferout;
     z.avail_out = L_BUF_SIZE;
 
-    inflateInit(&z);
-
+    status = inflateInit(&z);
+    if (status != Z_OK) {
+        L_ERROR("inflateInit fail for buffer\n", __func__);
+        success = FALSE;
+        goto cleanup_arrays;
+    }
 
     for ( ; ; ) {
         if (z.avail_in == 0) {

version-notes.html

@@ -114,6 +114,8 @@ They are <i>not</i> a complete listing of the modifications.
           pix_internal.h, array_internal.h and ccbord_internal.h.
         * Increase the .so number from 5.4.0 to 6.0.0.
         * Rename the autotools generated libraries from liblept to libleptonica
+        * Fix potential memory leaks from recogAverageSamples() and
+          recogDebugAverages() by not destroying a recog.
 
 1.82.0  Sept 22, 2021
         * Fix issue-585: reading tiff rgb with tiffbpl = 1.5 * packedbpl.