Apply Solaris patch 065-CR7110983

This change is pulled from here:
https://github.com/oracle/solaris-userland/blob/master/components/ksh93/patches/065-CR7110983.patch

Unfortunately there is no publicly available documentation on what
it does. We just have to assume the Solaris people knew what they
were doing. It looks like this fixes a memory leak in nv_putval().

This patch was also applied by ksh2020:
att@0563864

Author: McDutchie

src/cmd/ksh93/sh/name.c

@@ -1888,7 +1888,10 @@ void nv_putval(register Namval_t *np, const char *string, int flags)
 			else
 			{
 				if(size==0 && nv_isattr(np,NV_HOST)!=NV_HOST &&nv_isattr(np,NV_LJUST|NV_RJUST|NV_ZFILL))
+				{
 					nv_setsize(np,size=dot);
+					tofree = up->cp;
+				}
 				else if(size > dot)
 					dot = size;
 				else if(nv_isattr(np,NV_LJUST|NV_RJUST)==NV_LJUST && dot>size)