libcamera: formatting: Avoid spaces in for loops without expression

The clang formatter removes spaces in places of empty expressions in for
loops.  For example, it changes

  for (init; condition; )

to

  for (init; condition;)

libcamera currently uses both the styles and we should use only one of
them for consistency.  Since there is apparently no option to override
the formatter behavior (see
https://clang.llvm.org/docs/ClangFormatStyleOptions.html), let's remove
the extra spaces to make the formatter happy.

Signed-off-by: Milan Zamazal <mzamazal@redhat.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

src/libcamera/process.cpp

@@ -75,7 +75,7 @@ void ProcessManager::sighandler()
 		return;
 	}
 
-	for (auto it = processes_.begin(); it != processes_.end(); ) {
+	for (auto it = processes_.begin(); it != processes_.end();) {
 		Process *process = *it;
 
 		int wstatus;