patch 9.0.1234: the code style has to be checked manually

Problem:    The code style has to be checked manually.
Solution:   Add basic code style checks in a test.  Fix or avoid uncovered
            problems.
diff --git a/src/uninstall.c b/src/uninstall.c
index e9a9aac..c84189f 100644
--- a/src/uninstall.c
+++ b/src/uninstall.c
@@ -49,7 +49,8 @@
 	if (advapi_lib != NULL)
 	    delete_key_ex = (LONG (WINAPI *)(HKEY, LPCTSTR, REGSAM, DWORD))GetProcAddress(advapi_lib, "RegDeleteKeyExA");
     }
-    if (delete_key_ex != NULL) {
+    if (delete_key_ex != NULL)
+    {
 	return (*delete_key_ex)(hRootKey, key, flag, 0);
     }
     return RegDeleteKey(hRootKey, key);