Fix incorrect compiler path with spaces and args squiggle. (#5217)

* Fix invalid `c_cpp_properties.json` and configuration UI warning `Compiler path with spaces and arguments is missing double quotes`.

Author: sean-mcmanus

Extension/src/LanguageServer/configurations.ts

@@ -1036,7 +1036,7 @@ export class CppProperties {
             // Error when the compiler's path has spaces without quotes but args are used.
             // Except, exclude cl.exe paths because it could be for an older preview build.
             let compilerPathNeedsQuotes: boolean =
-                compilerPathAndArgs.additionalArgs &&
+                (compilerPathAndArgs.additionalArgs && compilerPathAndArgs.additionalArgs.length > 0) &&
                 !resolvedCompilerPath.startsWith('"') &&
                 compilerPathAndArgs.compilerPath !== undefined &&
                 compilerPathAndArgs.compilerPath.includes(" ");
@@ -1315,7 +1315,7 @@ export class CppProperties {
                         continue;
                     }
                     // Squiggle when the compiler's path has spaces without quotes but args are used.
-                    compilerPathNeedsQuotes = compilerPathAndArgs.additionalArgs
+                    compilerPathNeedsQuotes = (compilerPathAndArgs.additionalArgs && compilerPathAndArgs.additionalArgs.length > 0)
                         && !resolvedPath.startsWith('"')
                         && compilerPathAndArgs.compilerPath.includes(" ");
                     resolvedPath = compilerPathAndArgs.compilerPath;