patch 8.1.1086: too many curly braces

Problem:    Too many curly braces.
Solution:   Remove curly braces where they are not needed. (Hirohito Higashi,
            closes #3982)
diff --git a/src/dosinst.c b/src/dosinst.c
index 49a2fa4..2c05cf4 100644
--- a/src/dosinst.c
+++ b/src/dosinst.c
@@ -849,7 +849,7 @@
 	     * for MSDOS and NT.
 	     * The order of preference is:
 	     * 1. $VIMRUNTIME/vim.exe	    (user preference)
-	     * 2. $VIM/vim70/vim.exe	    (hard coded version)
+	     * 2. $VIM/vim81/vim.exe	    (hard coded version)
 	     * 3. installdir/vim.exe	    (hard coded install directory)
 	     */
 	    fprintf(fd, "set VIM_EXE_DIR=%s\n", installdir);
@@ -1568,9 +1568,7 @@
 
 	for (i = 0; ERROR_SUCCESS == lRet
 			   && i < sizeof(openwith) / sizeof(openwith[0]); i++)
-	{
 	    lRet = reg_create_key_and_value(hRootKey, openwith[i], NULL, "", flag);
-	}
     }
 
     return lRet;