ZlibSystemDependency: pass libtype to clib_compiler.find_library

Makes it stop reporting that it found a static zlib on Solaris
which does not ship a static library file for libz, and thus allows
"test cases/rust/13 external c dependencies" to pass.

Fixes #10906

mesonbuild/dependencies/dev.py

@@ -536,7 +536,7 @@ class ZlibSystemDependency(SystemDependency):
             else:
                 libs = ['z']
             for lib in libs:
-                l = self.clib_compiler.find_library(lib, environment, [])
+                l = self.clib_compiler.find_library(lib, environment, [], self.libtype)
                 h = self.clib_compiler.has_header('zlib.h', '', environment, dependencies=[self])
                 if l and h[0]:
                     self.is_found = True