Work around different clang-format versions

[jubalh]

Locally I have clang-format 15.0.2.
Our CI runs ubuntu-20.04 so it has 10.0.

Seems like a default value changed but I can't find it. When I still had clang-format 14.x everything was fine and checking: https://releases.llvm.org/15.0.0/tools/clang/docs/ReleaseNotes.html#clang-format

I only see irrelevant things.

Someone on the llvm IRC channel sais "there is no guarantee" and "maybe a regression or intended change".
But seems like noone knows which setting could be the one we need.

Since I don't have a better solution for now I will just edit this by hand to apply to the clang-format version we have on the CI. Will look into updating this one.

But in any case it would be best if the configuration file could have this setting so formatting works the same for all contributors.

[sjaeckel]

FYI: running make format with clang-format-16 results in

$  git diff -U1
diff --git a/src/config/color.c b/src/config/color.c
index 7676253f..9c1998f5 100644
--- a/src/config/color.c
+++ b/src/config/color.c
@@ -61,3 +61,3 @@ static struct color_pair_cache
         int16_t fg, bg;
-    } * pairs;
+    }* pairs;
     int size;
diff --git a/src/plugins/c_api.c b/src/plugins/c_api.c
index cda40c4d..8daf633d 100644
--- a/src/plugins/c_api.c
+++ b/src/plugins/c_api.c
@@ -457,3 +457,3 @@ c_command_callback(PluginCommand* command, gchar** args)
     CommandWrapper* wrapper = command->callback;
-    void (*f)(gchar * *args) = wrapper->func;
+    void (*f)(gchar** args) = wrapper->func;
     f(args);
diff --git a/tests/unittests/test_cmd_otr.c b/tests/unittests/test_cmd_otr.c
index ccd219de..267e06d4 100644
--- a/tests/unittests/test_cmd_otr.c
+++ b/tests/unittests/test_cmd_otr.c
@@ -169,3 +169,3 @@ test_with_command_and_connection_status(char* command, void* cmd_func, jabber_co
 
-    gboolean (*func)(ProfWin * window, const char* const command, gchar** args) = cmd_func;
+    gboolean (*func)(ProfWin* window, const char* const command, gchar** args) = cmd_func;
     gboolean result = func(NULL, CMD_OTR, args);