patch 8.2.4337: part of condition is always true

Problem:    Part of condition is always true.
Solution:   Remove that part of the condition. (closes #9729)
diff --git a/src/filepath.c b/src/filepath.c
index 4abf8f4..929fa56 100644
--- a/src/filepath.c
+++ b/src/filepath.c
@@ -416,7 +416,7 @@
 	// Need full path first (use expand_env() to remove a "~/")
 	if (!has_fullname && !has_homerelative)
 	{
-	    if ((c == '.' || c == '~') && **fnamep == '~')
+	    if (**fnamep == '~')
 		p = pbuf = expand_env_save(*fnamep);
 	    else
 		p = pbuf = FullName_save(*fnamep, FALSE);