diff-merges: re-arrange functions to match the order they are called in

For clarity, define public functions in the order they are called, to
make logic inter-dependencies easier to grok.

Signed-off-by: Sergey Organov <sorganov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff-merges.c

@@ -2,6 +2,10 @@
 
 #include "revision.h"
 
+/*
+ * Public functions. They are in the order they are called.
+ */
+
 void diff_merges_init_revs(struct rev_info *revs)
 {
 	revs->ignore_merges = -1;
@@ -46,16 +50,6 @@ int diff_merges_parse_opts(struct rev_info *revs, const char **argv)
 	return argcount;
 }
 
-void diff_merges_setup_revs(struct rev_info *revs)
-{
-	if (revs->combine_merges && revs->ignore_merges < 0)
-		revs->ignore_merges = 0;
-	if (revs->ignore_merges < 0)
-		revs->ignore_merges = 1;
-	if (revs->combined_all_paths && !revs->combine_merges)
-		die("--combined-all-paths makes no sense without -c or --cc");
-}
-
 void diff_merges_default_to_first_parent(struct rev_info *revs)
 {
 	if (revs->ignore_merges < 0)		/* No -m */
@@ -72,3 +66,13 @@ void diff_merges_default_to_dense_combined(struct rev_info *revs)
 		}
 	}
 }
+
+void diff_merges_setup_revs(struct rev_info *revs)
+{
+	if (revs->combine_merges && revs->ignore_merges < 0)
+		revs->ignore_merges = 0;
+	if (revs->ignore_merges < 0)
+		revs->ignore_merges = 1;
+	if (revs->combined_all_paths && !revs->combine_merges)
+		die("--combined-all-paths makes no sense without -c or --cc");
+}

diff-merges.h

@@ -13,11 +13,10 @@ void diff_merges_init_revs(struct rev_info *revs);
 
 int diff_merges_parse_opts(struct rev_info *revs, const char **argv);
 
-void diff_merges_setup_revs(struct rev_info *revs);
+void diff_merges_default_to_first_parent(struct rev_info *revs);
 
 void diff_merges_default_to_dense_combined(struct rev_info *revs);
 
-void diff_merges_default_to_first_parent(struct rev_info *revs);
-
+void diff_merges_setup_revs(struct rev_info *revs);
 
 #endif