Fix a crash in extractArgs (#10394)

Author: Colengms

Extension/src/common.ts

@@ -991,7 +991,7 @@ function extractArgs(argsString: string): string[] {
                 }
                 const still_escaping: boolean = (backslashCount % 2) !== 0;
                 if (!reachedEnd && c === '\"') {
-                    backslashCount /= 2;
+                    backslashCount = Math.floor(backslashCount / 2);
                 }
                 while (backslashCount--) {
                     currentArg += '\\';