patch 8.2.4757: list of libraries to suppress lsan errors is outdated

Problem:    List of libraries to suppress lsan errors is outdated.
Solution:   Add another library. (closes #10201)

src/testdir/lsan-suppress.txt

@@ -5,6 +5,7 @@ leak:libcairo.so.2
 leak:libfontconfig.so.1
 leak:libglib-2.0.so.0
 leak:libtinfo.so.5
+leak:libtinfo.so.6
 # Suppress leaks from other language libraries.
 leak:libperl.so.*
 leak:libpython*.so.*

src/version.c

@@ -746,6 +746,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    4757,
 /**/
     4756,
 /**/