Replace uses of "delete" with "delete[]" where appropriate

dtool/src/dtoolutil/executionEnvironment.cxx

@@ -283,7 +283,7 @@ ns_get_environment_variable(const string &var) const {
         if (item != NULL) {
           if (PyUnicode_Check(item)) {
             Py_ssize_t size = PyUnicode_GetSize(item);
-            wchar_t *data = new wchar_t[size + 1];
+            wchar_t *data = (wchar_t *)alloca(sizeof(wchar_t) * (size + 1));
 #if PY_MAJOR_VERSION >= 3
             if (PyUnicode_AsWideChar(item, data, size) != -1) {
 #else
@@ -292,7 +292,6 @@ ns_get_environment_variable(const string &var) const {
               wstring wstr (data, size);
               main_dir = Filename::from_os_specific_w(wstr);
             }
-            delete data;
           }
 #if PY_MAJOR_VERSION < 3
           else if (PyString_Check(item)) {

dtool/src/dtoolutil/pfstreamBuf.cxx

@@ -122,7 +122,7 @@ int PipeStreamBuf::underflow(void) {
 #endif /* PHAVE_IOSTREAM */
     gbump(-((int)n));
   }
-  delete buf;
+  delete[] buf;
   return ret;
 }
 

panda/src/downloader/download_utils.cxx

@@ -41,7 +41,7 @@ check_crc(Filename name) {
   unsigned long crc = crc32(0L, Z_NULL, 0);
   crc = crc32(crc, (unsigned char *)buffer, buffer_length);
 
-  delete buffer;
+  delete[] buffer;
 
   return crc;
 }
@@ -67,7 +67,7 @@ check_adler(Filename name) {
   unsigned long adler = adler32(0L, Z_NULL, 0);
   adler = adler32(adler, (unsigned char *)buffer, buffer_length);
 
-  delete buffer;
+  delete[] buffer;
 
   return adler;
 }

panda/src/pnmimagetypes/pnmFileTypeJPGWriter.cxx

@@ -333,7 +333,7 @@ write_data(xel *array, xelval *) {
     row_pointer[0] = row;
     (void) jpeg_write_scanlines(&cinfo, row_pointer, 1);
   }
-  delete row;
+  delete[] row;
 
   /* Step 6: Finish compression */