fix ConnectedPrinters c implementation

techniques/ConnectedPrinter/c/README.md

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+# *Connected printers*
+
+## Authorship information
+* Nickname: *Sems*
+* Github: *https://github.com/SemsYapar*
+
+## Technique Information
+* Technique Title: **U1309 - Connected Printer**
+* Technique category: **Sandbox Evasion**
+* Technique description: Same as the already existing description
+
+## Additional resources
+
+## Detection rules

techniques/ConnectedPrinter/c/main.c

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+#include <windows.h>
+#include <stdio.h>
+
+int main() {
+    DWORD pcbNeeded;
+    DWORD pcReturned;
+
+    if (!EnumPrinters(PRINTER_ENUM_LOCAL, NULL, 2, NULL, 0, &pcbNeeded, &pcReturned)) {
+        if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
+            PRINTER_INFO_2* pPrinterEnum = (PRINTER_INFO_2*)malloc(pcbNeeded);
+            if (EnumPrinters(PRINTER_ENUM_LOCAL, NULL, 2, (LPBYTE)pPrinterEnum, pcbNeeded, &pcbNeeded, &pcReturned)) {
+                printf("Printer number: %d\n", pcReturned);
+                for (int i = 0; i < pcReturned; i++) {
+                    printf("printerName %ls\n", pPrinterEnum[i].pPrinterName);
+                }
+            }
+            free(pPrinterEnum);
+        }
+    }
+}