fix: incomplete memory profile (#480)

The memory profile was being created before the main program even
started, so very little relevant data was recorded. Also update the
default view to total allocations since the program started rather than
the current heap.

Co-authored-by: Nicholas Jackson <nicholas.jackson@zii.aero>

Author: nickajacks1

app/main.go

@@ -307,9 +307,11 @@ func Main(config Config) {
 		f, err := os.Create(pprofPath)
 		fatalIfError(p, ctx, err)
 		defer f.Close() // nolint: gosec
-		runtime.GC()    // get up-to-date statistics
-		err = pprof.WriteHeapProfile(f)
-		fatalIfError(p, ctx, err)
+		defer func() {
+			runtime.GC() // get up-to-date statistics
+			err = pprof.Lookup("allocs").WriteTo(f, 0)
+			fatalIfError(p, ctx, err)
+		}()
 	}
 	err = ctx.Run(env, p, sta, config, cli.getGlobalState(), ghClient, defaultHTTPClient, cache, userConfig)
 	fatalIfError(p, ctx, err)