Replace assert with static_assert here applicable.

Replaces assert() with static_assert() if the condition is can be
evaluated at compile time.

llvm-svn: 360753
diff --git a/lldb/tools/debugserver/source/MacOSX/MachVMRegion.cpp b/lldb/tools/debugserver/source/MacOSX/MachVMRegion.cpp
index 1d6f4c7..6cb3429 100644
--- a/lldb/tools/debugserver/source/MacOSX/MachVMRegion.cpp
+++ b/lldb/tools/debugserver/source/MacOSX/MachVMRegion.cpp
@@ -122,7 +122,7 @@
   m_start = addr;
   m_depth = 1024;
   mach_msg_type_number_t info_size = kRegionInfoSize;
-  assert(sizeof(info_size) == 4);
+  static_assert(sizeof(info_size) == 4, "");
   m_err =
       ::mach_vm_region_recurse(m_task, &m_start, &m_size, &m_depth,
                                (vm_region_recurse_info_t)&m_data, &info_size);