patch 9.1.0715: Not correctly parsing color names (after v9.1.0709)

Problem:  Not correctly parsing color names (chdiza, after v9.1.0709)
Solution: Revert part of the patch that compares the color names and
          fall-back to the macro STRICMP

fixes: #15617
closes: #15619

Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/misc2.c b/src/misc2.c
index 5a8f369..31feebf 100644
--- a/src/misc2.c
+++ b/src/misc2.c
@@ -3090,6 +3090,16 @@
     return STRNCMP(kv1->value, kv2->value, MAX(kv1->length, kv2->length));
 }
 
+// compare two keyvalue_T structs by case insensitive value
+    int
+cmp_keyvalue_value_i(const void *a, const void *b)
+{
+    keyvalue_T *kv1 = (keyvalue_T *)a;
+    keyvalue_T *kv2 = (keyvalue_T *)b;
+
+    return STRICMP(kv1->value, kv2->value);
+}
+
 // compare two keyvalue_T structs by case insensitive ASCII value
 // with length
     int