Remove the Repair button from Programs and Features. Fix the CA.

installer/src/installer-lib/process.cpp

 #include <stdexcept>
 #include <functional>
 #include <wctype.h>
 // <thread> is C++11, but implemented in VS2012
 #include <thread>
 
 #include "installer-lib.h"
 #include "process.h"
 #include "handle.h"
 #include "session.h"
@@ skipping 18 matching lines @@
     Windows_Module_Handle user32Dll(LoadLibrary(L"user32.dll"));
     if (!user32Dll) return true;
 
     IsImmersiveDynamicFunc IsImmersiveDynamicCall = (IsImmersiveDynamicFunc)GetProcAddress(user32Dll, "IsImmersiveProcess");
     if (!IsImmersiveDynamicCall) return true;
 
     BOOL retValue = !IsImmersiveDynamicCall(procHandle);
 
     return retValue;
   }
+  return false;
 }
 
 //-------------------------------------------------------
 // creator_process
 //-------------------------------------------------------
 DWORD creator_process( HWND window )
 {
   DWORD pid ;
   DWORD r = GetWindowThreadProcessId( window, & pid ) ;
   if ( r == 0 )
@@ skipping 251 matching lines @@
       if ( ! is_running() )
       {
         return true ;
       }
     }
     // Assert is_running()
   }
   // No control path leaves the for-loop.
 } ;