Fix VST3 bundle find on Windows

Signed-off-by: falkTX <falktx@falktx.com>

distrho/src/DistrhoPluginVST3.cpp

@@ -4216,9 +4216,9 @@ bool ENTRYFNNAME(void*)
         String tmpPath(getBinaryFilename());
         tmpPath.truncate(tmpPath.rfind(DISTRHO_OS_SEP));
         tmpPath.truncate(tmpPath.rfind(DISTRHO_OS_SEP));
-        DISTRHO_SAFE_ASSERT_RETURN(tmpPath.endsWith("/Contents"), true);
+        DISTRHO_SAFE_ASSERT_RETURN(tmpPath.endsWith(DISTRHO_OS_SEP_STR "Contents"), true);
 
-        tmpPath.truncate(tmpPath.rfind('/'));
+        tmpPath.truncate(tmpPath.rfind(DISTRHO_OS_SEP));
         bundlePath = tmpPath;
         d_nextBundlePath = bundlePath.buffer();
     }

distrho/src/DistrhoUtils.cpp

@@ -59,7 +59,7 @@ const char* getBinaryFilename()
 # endif
     CHAR filenameBuf[MAX_PATH];
     filenameBuf[0] = '\0';
-    GetModuleFileName(hInstance, filenameBuf, sizeof(filenameBuf));
+    GetModuleFileNameA(hInstance, filenameBuf, sizeof(filenameBuf));
     filename = filenameBuf;
 #elif !defined(STATIC_BUILD)
     Dl_info info;