Fix the RZ_BIN_PREFIX test for Windows (#2189)

* Fix the RZ_BIN_PREFIX test for Windows
* Do not use previous VS2019 image

.appveyor.yml

@@ -23,7 +23,7 @@ environment:
     - builder: vs2019_64
       PYTHON: 'C:\\Python38-x64'
       INNO_SETUP: 'C:\\Program Files (x86)\\Inno Setup 6'
-      APPVEYOR_BUILD_WORKER_IMAGE: Previous Visual Studio 2019
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
       BUILD_DIR: build
       RUN_TESTS: true
     # VS2017 64 (Dynamic linking)
@@ -110,4 +110,4 @@ artifacts:
   # Binaries
   - path: "%ARTIFACT_ZIP%"
   # Test results
-  - path: test/results.json
+  - path: test/results.json

test/db/tools/rz_bin

@@ -98,14 +98,11 @@ RUN
 NAME=rz-bin -S, -SS, -rS and -rSS file elf
 FILE=bins/elf/analysis/x86-helloworld-gcc
 CMDS=<<EOF
-!rz-bin -S ${RZ_FILE}|wc -l|awk "{print \$1}"
-!rz-bin -SS ${RZ_FILE}|wc -l|awk "{print \$1}"
-!env RZ_BIN_PREFIX=prixfixe rz-bin -S ${RZ_FILE}
-!env RZ_BIN_PREFIX=prixfixe rz-bin -SS ${RZ_FILE}
+%RZ_BIN_PREFIX=prixfixe
+!rz-bin -S ${RZ_FILE}
+!rz-bin -SS ${RZ_FILE}
 EOF
 EXPECT=<<EOF
-34
-13
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