runtime(compiler): improve cppcheck

Properly escape the values for makeprg according to the :set rules

closes: #16014

Signed-off-by: Konfekt <Konfekt@users.noreply.github.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/compiler/cppcheck.vim b/runtime/compiler/cppcheck.vim
index d6fc0d6..4df12d1 100644
--- a/runtime/compiler/cppcheck.vim
+++ b/runtime/compiler/cppcheck.vim
@@ -1,7 +1,7 @@
 " vim compiler file
 " Compiler:	cppcheck (C++ static checker)
 " Maintainer:   Vincent B. (twinside@free.fr)
-" Last Change:  2024 Oct 17 by @Konfekt
+" Last Change:  2024 Nov 08 by @Konfekt
 
 if exists("current_compiler") | finish | endif
 let current_compiler = "cppcheck"
@@ -25,7 +25,7 @@
       \	          (filereadable('compile_commands.json') ? '--project=compile_commands.json' :
       \           (!empty(glob('*'..s:slash..'compile_commands.json', 1, 1)) ? '--project='..glob('*'..s:slash..'compile_commands.json', 1, 1)[0] :
       \	          (empty(&path) ? '' : '-I')..join(map(filter(split(&path, ','), 'isdirectory(v:val)'),'shellescape(v:val)'), ' -I')))))
-silent CompilerSet makeprg
+exe 'CompilerSet makeprg='..escape(&l:makeprg, ' "')
 
 CompilerSet errorformat=
   \%f:%l:%c:\ %tarning:\ %m,