patch 8.2.3375: using uninitialized memory

Problem:    Using uninitialized memory.
Solution:   Initialize textprop_save_len.

Author: brammool

src/memline.c

@@ -289,6 +289,7 @@ ml_open(buf_T *buf)
     buf->b_ml.ml_line_lnum = 0;	// no cached line
 #ifdef FEAT_BYTEOFF
     buf->b_ml.ml_chunksize = NULL;
+    buf->b_ml.ml_usedchunks = 0;
 #endif
 
     if (cmdmod.cmod_flags & CMOD_NOSWAPFILE)
@@ -3607,7 +3608,7 @@ ml_delete_int(buf_T *buf, linenr_T lnum, int flags)
     int		ret = FAIL;
 #ifdef FEAT_PROP_POPUP
     char_u	*textprop_save = NULL;
-    int		textprop_save_len;
+    int		textprop_save_len = 0;
 #endif
 
     if (lowest_marked && lowest_marked > lnum)

src/version.c

@@ -755,6 +755,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    3375,
 /**/
     3374,
 /**/