windows: Remove HAVE_MINIDUMP_TYPE test

We've relied on it being present for msvc for ages...

Reviewed-By: Thomas Munro <thomas.munro@gmail.com>
Discussion: https://postgr.es/m/20220807012914.ydz73yte6j3coulo@awork3.anarazel.de

src/backend/main/main.c

@@ -63,7 +63,7 @@ main(int argc, char *argv[])
 	 * If supported on the current platform, set up a handler to be called if
 	 * the backend/postmaster crashes with a fatal signal or exception.
 	 */
-#if defined(WIN32) && defined(HAVE_MINIDUMP_TYPE)
+#if defined(WIN32)
 	pgwin32_install_crashdump_handler();
 #endif
 

src/backend/port/win32/Makefile

@@ -13,11 +13,9 @@ top_builddir = ../../../..
 include $(top_builddir)/src/Makefile.global
 
 OBJS = \
+	crashdump.o \
 	signal.o \
 	socket.o \
 	timer.o
-ifeq ($(have_win32_dbghelp), yes)
-OBJS += crashdump.o
-endif
 
 include $(top_srcdir)/src/backend/common.mk