File procmail-formisc.c.patch of Package procmail

Patch for Bug 1068648 aka CVE-2017-16844

diff --git a/src/formisc.c b/src/formisc.c
index d91b227..6c7594b 100644
--- a/src/formisc.c
+++ b/src/formisc.c
@@ -103,7 +103,7 @@ void loadsaved(sp)const struct saved*const sp;	     /* load some saved text */
 }
 							    /* append to buf */
 void loadbuf(text,len)const char*const text;const size_t len;
-{ if(buffilled+len>buflen)			  /* buf can't hold the text */
+{ while(buffilled+len>buflen)			  /* buf can't hold the text */
      buf=realloc(buf,buflen+=Bsize);
   tmemmove(buf+buffilled,text,len);buffilled+=len;
 }